165364967838 has 48 divisors (see below), whose sum is σ = 384781190400. Its totient is φ = 47240437104.

The previous prime is 165364967827. The next prime is 165364967879. The reversal of 165364967838 is 838769463561.

165364967838 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2264013 + ... + 2335911.

It is an arithmetic number, because the mean of its divisors is an integer number (8016274800).

Almost surely, 2^165364967838 is an apocalyptic number.

165364967838 is an abundant number, since it is smaller than the sum of its proper divisors (219416222562).

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

165364967838 is a wasteful number, since it uses less digits than its factorization.

165364967838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79741 (or 79734 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 66.

The spelling of 165364967838 in words is "one hundred sixty-five billion, three hundred sixty-four million, nine hundred sixty-seven thousand, eight hundred thirty-eight".