117961916 has 24 divisors (see below), whose sum is σ = 211498560. Its totient is φ = 57541952.

The previous prime is 117961903. The next prime is 117961919. The reversal of 117961916 is 619169711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117961919) 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, 72326 + ... + 73938.

It is an arithmetic number, because the mean of its divisors is an integer number (8812440).

Almost surely, 2^117961916 is an apocalyptic number.

It is an amenable number.

117961916 is a deficient number, since it is larger than the sum of its proper divisors (93536644).

117961916 is a wasteful number, since it uses less digits than its factorization.

117961916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053 (or 2051 counting only the distinct ones).

The product of its digits is 20412, while the sum is 41.

The square root of 117961916 is about 10861.0273915500. The cubic root of 117961916 is about 490.4340399610.

The spelling of 117961916 in words is "one hundred seventeen million, nine hundred sixty-one thousand, nine hundred sixteen".