165158436 has 12 divisors (see below), whose sum is σ = 385369712. Its totient is φ = 55052808.

The previous prime is 165158387. The next prime is 165158437. The reversal of 165158436 is 634851561.

165158436 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 165158394 and 165158403.

It is not an unprimeable number, because it can be changed into a prime (165158437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6881590 + ... + 6881613.

Almost surely, 2^165158436 is an apocalyptic number.

It is an amenable number.

165158436 is an abundant number, since it is smaller than the sum of its proper divisors (220211276).

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

165158436 is a wasteful number, since it uses less digits than its factorization.

165158436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13763210 (or 13763208 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 165158436 is about 12851.3982118678. The cubic root of 165158436 is about 548.6561527824.

The spelling of 165158436 in words is "one hundred sixty-five million, one hundred fifty-eight thousand, four hundred thirty-six".