165163790 has 32 divisors (see below), whose sum is σ = 327028320. Its totient is φ = 60054720.

The previous prime is 165163769. The next prime is 165163811. The reversal of 165163790 is 97361561.

It is an interprime number because it is at equal distance from previous prime (165163769) and next prime (165163811).

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 7106 + ... + 19514.

It is an arithmetic number, because the mean of its divisors is an integer number (10219635).

Almost surely, 2^165163790 is an apocalyptic number.

165163790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165163790 is a deficient number, since it is larger than the sum of its proper divisors (161864530).

165163790 is a wasteful number, since it uses less digits than its factorization.

165163790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12449 (or 12427 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 165163790 is about 12851.6065143623. The cubic root of 165163790 is about 548.6620813792.

The spelling of 165163790 in words is "one hundred sixty-five million, one hundred sixty-three thousand, seven hundred ninety".