165044790 has 80 divisors (see below), whose sum is σ = 455864112. Its totient is φ = 42814656.

The previous prime is 165044779. The next prime is 165044801. The reversal of 165044790 is 97440561.

165044790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (165044779) and next prime (165044801).

It is a super-2 number, since 2×165044790² = 54479565412288200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27217 + ... + 32723.

Almost surely, 2^165044790 is an apocalyptic number.

165044790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 165044790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227932056).

165044790 is an abundant number, since it is smaller than the sum of its proper divisors (290819322).

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

165044790 is a wasteful number, since it uses less digits than its factorization.

165044790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5563 (or 5554 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 165044790 is about 12846.9759087499. The cubic root of 165044790 is about 548.5302799422.

The spelling of 165044790 in words is "one hundred sixty-five million, forty-four thousand, seven hundred ninety".