| Base | Representation |
|---|---|
| bin | 111011010100010… |
| … | …0000101100000000 |
| 3 | 12010201011022001000 |
| 4 | 1312220200230000 |
| 5 | 13034011044021 |
| 6 | 525255412000 |
| 7 | 100215351453 |
| oct | 16650405400 |
| 9 | 5121138030 |
| 10 | 1990331136 |
| 11 | 931543272 |
| 12 | 476684000 |
| 13 | 259470441 |
| 14 | 14c49d49a |
| 15 | b9b02b26 |
| hex | 76a20b00 |
1990331136 has 144 divisors (see below), whose sum is σ = 5919424000. Its totient is φ = 659653632.
The previous prime is 1990331113. The next prime is 1990331141. The reversal of 1990331136 is 6311330991.
1990331136 is a `hidden beast` number, since 199 + 0 + 331 + 136 = 666.
It is a tau number, because it is divible by the number of its divisors (144).
It is a super-2 number, since 2×19903311362 = 7922836061862100992, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a self number, because there is not a number n which added to its sum of digits gives 1990331136.
It is an unprimeable number.
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 15 ways as a sum of consecutive naturals, for example, 1374765 + ... + 1376211.
Almost surely, 21990331136 is an apocalyptic number.
1990331136 is a gapful number since it is divisible by the number (16) 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 1990331136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2959712000).
1990331136 is an abundant number, since it is smaller than the sum of its proper divisors (3929092864).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1990331136 is a wasteful number, since it uses less digits than its factorization.
1990331136 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1671 (or 1651 counting only the distinct ones).
The product of its (nonzero) digits is 13122, while the sum is 36.
The square root of 1990331136 is about 44613.1273954203. The cubic root of 1990331136 is about 1257.8874350277.
The spelling of 1990331136 in words is "one billion, nine hundred ninety million, three hundred thirty-one thousand, one hundred thirty-six".
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