165430520 has 16 divisors (see below), whose sum is σ = 372218760. Its totient is φ = 66172192.

The previous prime is 165430487. The next prime is 165430567. The reversal of 165430520 is 25034561.

165430520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 165430520.

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, 2067842 + ... + 2067921.

Almost surely, 2^165430520 is an apocalyptic number.

165430520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165430520 is an abundant number, since it is smaller than the sum of its proper divisors (206788240).

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

165430520 is a wasteful number, since it uses less digits than its factorization.

165430520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4135774 (or 4135770 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 165430520 is about 12861.9796299015. The cubic root of 165430520 is about 548.9572750739.

The spelling of 165430520 in words is "one hundred sixty-five million, four hundred thirty thousand, five hundred twenty".