| Base | Representation |
|---|---|
| bin | 111001001100001… |
| … | …1101000111111100 |
| 3 | 11221201221222110100 |
| 4 | 1302120131013330 |
| 5 | 12412231411442 |
| 6 | 514231041100 |
| 7 | 65361226113 |
| oct | 16230350774 |
| 9 | 4851858410 |
| 10 | 1919013372 |
| 11 | 8a5262171 |
| 12 | 456810190 |
| 13 | 24775cb93 |
| 14 | 142c16c7a |
| 15 | b371684c |
| hex | 7261d1fc |
1919013372 has 72 divisors (see below), whose sum is σ = 5118815520. Its totient is φ = 604961280.
The previous prime is 1919013361. The next prime is 1919013377. The reversal of 1919013372 is 2733109191.
It is a happy number.
1919013372 is a `hidden beast` number, since 191 + 90 + 13 + 372 = 666.
It is a super-2 number, since 2×19190133722 = 7365224643829620768, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1919013377) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60672 + ... + 86712.
It is an arithmetic number, because the mean of its divisors is an integer number (71094660).
Almost surely, 21919013372 is an apocalyptic number.
1919013372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1919013372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2559407760).
1919013372 is an abundant number, since it is smaller than the sum of its proper divisors (3199802148).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1919013372 is a wasteful number, since it uses less digits than its factorization.
1919013372 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 26163 (or 26158 counting only the distinct ones).
The product of its (nonzero) digits is 10206, while the sum is 36.
The square root of 1919013372 is about 43806.5448534805. The cubic root of 1919013372 is about 1242.6800712800.
The spelling of 1919013372 in words is "one billion, nine hundred nineteen million, thirteen thousand, three hundred seventy-two".
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