165808464 has 20 divisors (see below), whose sum is σ = 428338656. Its totient is φ = 55269472.

The previous prime is 165808453. The next prime is 165808493. The reversal of 165808464 is 464808561.

It is a congruent number.

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, 1727124 + ... + 1727219.

Almost surely, 2^165808464 is an apocalyptic number.

It is an amenable number.

165808464 is an abundant number, since it is smaller than the sum of its proper divisors (262530192).

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

165808464 is a wasteful number, since it uses less digits than its factorization.

165808464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454354 (or 3454348 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 165808464 is about 12876.6635430145. The cubic root of 165808464 is about 549.3750079662.

The spelling of 165808464 in words is "one hundred sixty-five million, eight hundred eight thousand, four hundred sixty-four".