165497136 has 40 divisors (see below), whose sum is σ = 488611584. Its totient is φ = 47284800.

The previous prime is 165497099. The next prime is 165497149. The reversal of 165497136 is 631794561.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245940 + ... + 246611.

Almost surely, 2^165497136 is an apocalyptic number.

165497136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165497136 is an abundant number, since it is smaller than the sum of its proper divisors (323114448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165497136 is a wasteful number, since it uses less digits than its factorization.

165497136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492569 (or 492563 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 165497136 is about 12864.5690172660. The cubic root of 165497136 is about 549.0309503754.

It can be divided in two parts, 1654 and 97136, that added together give a triangular number (98790 = T₄₄₄).

The spelling of 165497136 in words is "one hundred sixty-five million, four hundred ninety-seven thousand, one hundred thirty-six".