165135390 has 48 divisors (see below), whose sum is σ = 461035152. Its totient is φ = 37744896.

The previous prime is 165135361. The next prime is 165135401. The reversal of 165135390 is 93531561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54699 + ... + 57638.

It is an arithmetic number, because the mean of its divisors is an integer number (9604899).

Almost surely, 2^165135390 is an apocalyptic number.

165135390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165135390 is an abundant number, since it is smaller than the sum of its proper divisors (295899762).

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

165135390 is a wasteful number, since it uses less digits than its factorization.

165135390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112361 (or 112354 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 33.

The square root of 165135390 is about 12850.5015466323. The cubic root of 165135390 is about 548.6306319993.

The spelling of 165135390 in words is "one hundred sixty-five million, one hundred thirty-five thousand, three hundred ninety".