187115980 has 24 divisors (see below), whose sum is σ = 396762912. Its totient is φ = 74118912.

The previous prime is 187115959. The next prime is 187115983. The reversal of 187115980 is 89511781.

187115980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (187115983) 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, 43357 + ... + 47476.

It is an arithmetic number, because the mean of its divisors is an integer number (16531788).

Almost surely, 2^187115980 is an apocalyptic number.

187115980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187115980 is an abundant number, since it is smaller than the sum of its proper divisors (209646932).

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

187115980 is a wasteful number, since it uses less digits than its factorization.

187115980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90945 (or 90943 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 40.

The square root of 187115980 is about 13679.0343226413. The cubic root of 187115980 is about 571.9661047286.

The spelling of 187115980 in words is "one hundred eighty-seven million, one hundred fifteen thousand, nine hundred eighty".