165261136 has 20 divisors (see below), whose sum is σ = 322162912. Its totient is φ = 82122336.

The previous prime is 165261121. The next prime is 165261143. The reversal of 165261136 is 631162561.

It is a super-2 number, since 2×165261136² = 54622486144020992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165261098 and 165261107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29076 + ... + 34291.

Almost surely, 2^165261136 is an apocalyptic number.

165261136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165261136 is a deficient number, since it is larger than the sum of its proper divisors (156901776).

165261136 is a wasteful number, since it uses less digits than its factorization.

165261136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63538 (or 63532 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 165261136 is about 12855.3932650853. The cubic root of 165261136 is about 548.7698523163.

The spelling of 165261136 in words is "one hundred sixty-five million, two hundred sixty-one thousand, one hundred thirty-six".