165938384 has 10 divisors (see below), whose sum is σ = 321505650. Its totient is φ = 82969184.

The previous prime is 165938369. The next prime is 165938441. The reversal of 165938384 is 483839561.

It can be written as a sum of positive squares in only one way, i.e., 165688384 + 250000 = 12872^2 + 500^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5185559 + ... + 5185590.

It is an arithmetic number, because the mean of its divisors is an integer number (32150565).

Almost surely, 2^165938384 is an apocalyptic number.

It is an amenable number.

165938384 is a deficient number, since it is larger than the sum of its proper divisors (155567266).

165938384 is a wasteful number, since it uses less digits than its factorization.

165938384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10371157 (or 10371151 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The square root of 165938384 is about 12881.7073402558. The cubic root of 165938384 is about 549.5184589606.

The spelling of 165938384 in words is "one hundred sixty-five million, nine hundred thirty-eight thousand, three hundred eighty-four".