111913980 has 24 divisors (see below), whose sum is σ = 313359312. Its totient is φ = 29843712.

The previous prime is 111913961. The next prime is 111914017. The reversal of 111913980 is 89319111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932557 + ... + 932676.

It is an arithmetic number, because the mean of its divisors is an integer number (13056638).

Almost surely, 2^111913980 is an apocalyptic number.

111913980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111913980 is an abundant number, since it is smaller than the sum of its proper divisors (201445332).

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

111913980 is a wasteful number, since it uses less digits than its factorization.

111913980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865245 (or 1865243 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 33.

The square root of 111913980 is about 10578.9404006261. The cubic root of 111913980 is about 481.9050162060.

The spelling of 111913980 in words is "one hundred eleven million, nine hundred thirteen thousand, nine hundred eighty".