165539494 has 16 divisors (see below), whose sum is σ = 250449408. Its totient is φ = 82059712.

The previous prime is 165539483. The next prime is 165539497. The reversal of 165539494 is 494935561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165539497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150354 + ... + 151450.

It is an arithmetic number, because the mean of its divisors is an integer number (15653088).

Almost surely, 2^165539494 is an apocalyptic number.

165539494 is a deficient number, since it is larger than the sum of its proper divisors (84909914).

165539494 is a wasteful number, since it uses less digits than its factorization.

165539494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679.

The product of its digits is 583200, while the sum is 46.

The square root of 165539494 is about 12866.2152166051. The cubic root of 165539494 is about 549.0777867734.

The spelling of 165539494 in words is "one hundred sixty-five million, five hundred thirty-nine thousand, four hundred ninety-four".