165134090 has 64 divisors (see below), whose sum is σ = 345720960. Its totient is φ = 56125440.

The previous prime is 165134087. The next prime is 165134119. The reversal of 165134090 is 90431561.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 435521 + ... + 435899.

It is an arithmetic number, because the mean of its divisors is an integer number (5401890).

Almost surely, 2^165134090 is an apocalyptic number.

165134090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165134090 is an abundant number, since it is smaller than the sum of its proper divisors (180586870).

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

165134090 is a wasteful number, since it uses less digits than its factorization.

165134090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 165134090 is about 12850.4509648494. The cubic root of 165134090 is about 548.6291923288.

The spelling of 165134090 in words is "one hundred sixty-five million, one hundred thirty-four thousand, ninety".