165154956 has 24 divisors (see below), whose sum is σ = 386069040. Its totient is φ = 54950592.

The previous prime is 165154937. The next prime is 165154961. The reversal of 165154956 is 659451561.

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, 5671 + ... + 19038.

It is an arithmetic number, because the mean of its divisors is an integer number (16086210).

Almost surely, 2^165154956 is an apocalyptic number.

It is an amenable number.

165154956 is an abundant number, since it is smaller than the sum of its proper divisors (220914084).

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

165154956 is a wasteful number, since it uses less digits than its factorization.

165154956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25273 (or 25271 counting only the distinct ones).

The product of its digits is 162000, while the sum is 42.

The square root of 165154956 is about 12851.2628173266. The cubic root of 165154956 is about 548.6522992366.

The spelling of 165154956 in words is "one hundred sixty-five million, one hundred fifty-four thousand, nine hundred fifty-six".