165023998 has 16 divisors (see below), whose sum is σ = 262335024. Its totient is φ = 77587840.

The previous prime is 165023953. The next prime is 165024017. The reversal of 165023998 is 899320561.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71661 + ... + 73927.

It is an arithmetic number, because the mean of its divisors is an integer number (16395939).

Almost surely, 2^165023998 is an apocalyptic number.

165023998 is a deficient number, since it is larger than the sum of its proper divisors (97311026).

165023998 is a wasteful number, since it uses less digits than its factorization.

165023998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 165023998 is about 12846.1666655855. The cubic root of 165023998 is about 548.5072447396.

The spelling of 165023998 in words is "one hundred sixty-five million, twenty-three thousand, nine hundred ninety-eight".