165134540 has 12 divisors (see below), whose sum is σ = 346782576. Its totient is φ = 66053808.

The previous prime is 165134537. The next prime is 165134573. The reversal of 165134540 is 45431561.

It is a happy number.

165134540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4128344 + ... + 4128383.

It is an arithmetic number, because the mean of its divisors is an integer number (28898548).

Almost surely, 2^165134540 is an apocalyptic number.

165134540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165134540 is an abundant number, since it is smaller than the sum of its proper divisors (181648036).

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

165134540 is a wasteful number, since it uses less digits than its factorization.

165134540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8256736 (or 8256734 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 165134540 is about 12850.4684739507. The cubic root of 165134540 is about 548.6296906771.

The spelling of 165134540 in words is "one hundred sixty-five million, one hundred thirty-four thousand, five hundred forty".