117981974 has 16 divisors (see below), whose sum is σ = 198280656. Its totient is φ = 52178400.

The previous prime is 117981967. The next prime is 117981977. The reversal of 117981974 is 479189711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117981977) 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, 71657 + ... + 73284.

It is an arithmetic number, because the mean of its divisors is an integer number (12392541).

Almost surely, 2^117981974 is an apocalyptic number.

117981974 is a deficient number, since it is larger than the sum of its proper divisors (80298682).

117981974 is a wasteful number, since it uses less digits than its factorization.

117981974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144991.

The product of its digits is 127008, while the sum is 47.

The square root of 117981974 is about 10861.9507456073. The cubic root of 117981974 is about 490.4618358486.

The spelling of 117981974 in words is "one hundred seventeen million, nine hundred eighty-one thousand, nine hundred seventy-four".