165081264 has 20 divisors (see below), whose sum is σ = 426460056. Its totient is φ = 55027072.

The previous prime is 165081247. The next prime is 165081269. The reversal of 165081264 is 462180561.

165081264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165081269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1719549 + ... + 1719644.

Almost surely, 2^165081264 is an apocalyptic number.

It is an amenable number.

165081264 is an abundant number, since it is smaller than the sum of its proper divisors (261378792).

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

165081264 is a wasteful number, since it uses less digits than its factorization.

165081264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439204 (or 3439198 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 165081264 is about 12848.3953861951. The cubic root of 165081264 is about 548.5706843678.

The spelling of 165081264 in words is "one hundred sixty-five million, eighty-one thousand, two hundred sixty-four".