165153950 has 24 divisors (see below), whose sum is σ = 330817368. Its totient is φ = 60979680.

The previous prime is 165153949. The next prime is 165153973. The reversal of 165153950 is 59351561.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 165153950.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126392 + ... + 127691.

It is an arithmetic number, because the mean of its divisors is an integer number (13784057).

Almost surely, 2^165153950 is an apocalyptic number.

165153950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165153950 is an abundant number, since it is smaller than the sum of its proper divisors (165663418).

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

165153950 is a wasteful number, since it uses less digits than its factorization.

165153950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254108 (or 254103 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 165153950 is about 12851.2236771445. The cubic root of 165153950 is about 548.6511852417.

The spelling of 165153950 in words is "one hundred sixty-five million, one hundred fifty-three thousand, nine hundred fifty".