168997160 has 32 divisors (see below), whose sum is σ = 381256200. Its totient is φ = 67418880.

The previous prime is 168997133. The next prime is 168997163. The reversal of 168997160 is 61799861.

It can be written as a sum of positive squares in 4 ways, for example, as 106048804 + 62948356 = 10298^2 + 7934^2 .

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (168997163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10130 + ... + 20990.

Almost surely, 2^168997160 is an apocalyptic number.

168997160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168997160 is an abundant number, since it is smaller than the sum of its proper divisors (212259040).

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

168997160 is a wasteful number, since it uses less digits than its factorization.

168997160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11261 (or 11257 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 168997160 is about 12999.8907687719. The cubic root of 168997160 is about 552.8743843643.

The spelling of 168997160 in words is "one hundred sixty-eight million, nine hundred ninety-seven thousand, one hundred sixty".