165214988 has 12 divisors (see below), whose sum is σ = 290171952. Its totient is φ = 82308720.

The previous prime is 165214981. The next prime is 165214999. The reversal of 165214988 is 889412561.

It is not an unprimeable number, because it can be changed into a prime (165214981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73448 + ... + 75663.

It is an arithmetic number, because the mean of its divisors is an integer number (24180996).

Almost surely, 2^165214988 is an apocalyptic number.

It is an amenable number.

165214988 is a deficient number, since it is larger than the sum of its proper divisors (124956964).

165214988 is a wasteful number, since it uses less digits than its factorization.

165214988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149392 (or 149390 counting only the distinct ones).

The product of its digits is 138240, while the sum is 44.

The square root of 165214988 is about 12853.5982510735. The cubic root of 165214988 is about 548.7187675314.

The spelling of 165214988 in words is "one hundred sixty-five million, two hundred fourteen thousand, nine hundred eighty-eight".