168973522 has 16 divisors (see below), whose sum is σ = 258477120. Its totient is φ = 82822608.

The previous prime is 168973513. The next prime is 168973537. The reversal of 168973522 is 225379861.

It is a super-2 number, since 2×168973522² = 57104102274168968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45043 + ... + 48649.

It is an arithmetic number, because the mean of its divisors is an integer number (16154820).

Almost surely, 2^168973522 is an apocalyptic number.

168973522 is a deficient number, since it is larger than the sum of its proper divisors (89503598).

168973522 is a wasteful number, since it uses less digits than its factorization.

168973522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065.

The product of its digits is 181440, while the sum is 43.

The square root of 168973522 is about 12998.9815754928. The cubic root of 168973522 is about 552.8486059151.

The spelling of 168973522 in words is "one hundred sixty-eight million, nine hundred seventy-three thousand, five hundred twenty-two".