168117156 has 27 divisors (see below), whose sum is σ = 425159553. Its totient is φ = 56013120.

The previous prime is 168117151. The next prime is 168117161. The reversal of 168117156 is 651711861.

The square root of 168117156 is 12966.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (168117151) and next prime (168117161).

It can be written as a sum of positive squares in only one way, i.e., 105390756 + 62726400 = 10266^2 + 7920^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 168117156.

It is not an unprimeable number, because it can be changed into a prime (168117151) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 76716 + ... + 78876.

Almost surely, 2^168117156 is an apocalyptic number.

168117156 is the 12966-th square number.

It is an amenable number.

168117156 is an abundant number, since it is smaller than the sum of its proper divisors (257042397).

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

168117156 is an equidigital number, since it uses as much as digits as its factorization.

168117156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332 (or 2166 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The cubic root of 168117156 is about 551.9130691713.

Multiplying 168117156 by its sum of digits (36), we get a square (6052217616 = 77796²).

168117156 divided by its sum of digits (36) gives a square (4669921 = 2161²).

The spelling of 168117156 in words is "one hundred sixty-eight million, one hundred seventeen thousand, one hundred fifty-six".