165117874 has 16 divisors (see below), whose sum is σ = 259469568. Its totient is φ = 78656512.

The previous prime is 165117863. The next prime is 165117877. The reversal of 165117874 is 478711561.

It is not an unprimeable number, because it can be changed into a prime (165117877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4839 + ... + 18805.

It is an arithmetic number, because the mean of its divisors is an integer number (16216848).

Almost surely, 2^165117874 is an apocalyptic number.

165117874 is a deficient number, since it is larger than the sum of its proper divisors (94351694).

165117874 is a wasteful number, since it uses less digits than its factorization.

165117874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14249.

The product of its digits is 47040, while the sum is 40.

The square root of 165117874 is about 12849.8199987393. The cubic root of 165117874 is about 548.6112334643.

The spelling of 165117874 in words is "one hundred sixty-five million, one hundred seventeen thousand, eight hundred seventy-four".