168911970 has 32 divisors (see below), whose sum is σ = 405743040. Its totient is φ = 45003840.

The previous prime is 168911947. The next prime is 168911971. The reversal of 168911970 is 79119861.

It is not an unprimeable number, because it can be changed into a prime (168911971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52776 + ... + 55884.

It is an arithmetic number, because the mean of its divisors is an integer number (12679470).

Almost surely, 2^168911970 is an apocalyptic number.

168911970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168911970 is an abundant number, since it is smaller than the sum of its proper divisors (236831070).

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

168911970 is a wasteful number, since it uses less digits than its factorization.

168911970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4930.

The product of its (nonzero) digits is 27216, while the sum is 42.

The square root of 168911970 is about 12996.6137897531. The cubic root of 168911970 is about 552.7814690254.

The spelling of 168911970 in words is "one hundred sixty-eight million, nine hundred eleven thousand, nine hundred seventy".