| Base | Representation |
|---|---|
| bin | 100000010001001… |
| … | …1110001000011010 |
| 3 | 2210110102211101000 |
| 4 | 1000202132020122 |
| 5 | 4204142400023 |
| 6 | 255235405430 |
| 7 | 35555314401 |
| oct | 10042361032 |
| 9 | 2713384330 |
| 10 | 1082778138 |
| 11 | 506222272 |
| 12 | 262753876 |
| 13 | 143430c30 |
| 14 | a3b38638 |
| 15 | 650d3243 |
| hex | 4089e21a |
1082778138 has 64 divisors (see below), whose sum is σ = 2661361920. Its totient is φ = 324150336.
The previous prime is 1082778131. The next prime is 1082778139. The reversal of 1082778138 is 8318772801.
It is a super-2 number, since 2×10827781382 = 2344816992261494088, which contains 22 as substring.
It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.
It is a junction number, because it is equal to n+sod(n) for n = 1082778093 and 1082778102.
It is not an unprimeable number, because it can be changed into a prime (1082778131) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5131 + ... + 46817.
It is an arithmetic number, because the mean of its divisors is an integer number (41583780).
Almost surely, 21082778138 is an apocalyptic number.
1082778138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 1082778138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330680960).
1082778138 is an abundant number, since it is smaller than the sum of its proper divisors (1578583782).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1082778138 is a wasteful number, since it uses less digits than its factorization.
1082778138 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 41748 (or 41742 counting only the distinct ones).
The product of its (nonzero) digits is 150528, while the sum is 45.
The square root of 1082778138 is about 32905.5943268010. The cubic root of 1082778138 is about 1026.8645460818.
The spelling of 1082778138 in words is "one billion, eighty-two million, seven hundred seventy-eight thousand, one hundred thirty-eight".
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