165121384 has 16 divisors (see below), whose sum is σ = 310749120. Its totient is φ = 82254960.

The previous prime is 165121379. The next prime is 165121399. The reversal of 165121384 is 483121561.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35914 + ... + 40249.

It is an arithmetic number, because the mean of its divisors is an integer number (19421820).

Almost surely, 2^165121384 is an apocalyptic number.

It is an amenable number.

165121384 is a deficient number, since it is larger than the sum of its proper divisors (145627736).

165121384 is a wasteful number, since it uses less digits than its factorization.

165121384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76440 (or 76436 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 165121384 is about 12849.9565758021. The cubic root of 165121384 is about 548.6151208121.

The spelling of 165121384 in words is "one hundred sixty-five million, one hundred twenty-one thousand, three hundred eighty-four".