165432090 has 16 divisors (see below), whose sum is σ = 397037088. Its totient is φ = 44115216.

The previous prime is 165432067. The next prime is 165432103. The reversal of 165432090 is 90234561.

165432090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 5514403 = 165432090 / (1 + 6 + 5 + 4 + 3 + 2 + 0 + 9 + 0).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2757172 + ... + 2757231.

It is an arithmetic number, because the mean of its divisors is an integer number (24814818).

Almost surely, 2^165432090 is an apocalyptic number.

165432090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165432090 is an abundant number, since it is smaller than the sum of its proper divisors (231604998).

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

165432090 is a wasteful number, since it uses less digits than its factorization.

165432090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5514413.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 165432090 is about 12862.0406623521. The cubic root of 165432090 is about 548.9590116744.

The spelling of 165432090 in words is "one hundred sixty-five million, four hundred thirty-two thousand, ninety".