165937538 has 8 divisors (see below), whose sum is σ = 268052988. Its totient is φ = 76586544.

The previous prime is 165937523. The next prime is 165937547. The reversal of 165937538 is 835739561.

It can be written as a sum of positive squares in 2 ways, for example, as 165817129 + 120409 = 12877^2 + 347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 165937492 and 165937501.

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, 3191081 + ... + 3191132.

Almost surely, 2^165937538 is an apocalyptic number.

165937538 is a deficient number, since it is larger than the sum of its proper divisors (102115450).

165937538 is a wasteful number, since it uses less digits than its factorization.

165937538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6382228.

The product of its digits is 680400, while the sum is 47.

The square root of 165937538 is about 12881.6745029519. The cubic root of 165937538 is about 549.5175250931.

The spelling of 165937538 in words is "one hundred sixty-five million, nine hundred thirty-seven thousand, five hundred thirty-eight".