111959838 has 12 divisors (see below), whose sum is σ = 242579688. Its totient is φ = 37319940.

The previous prime is 111959821. The next prime is 111959851. The reversal of 111959838 is 838959111.

111959838 is a `hidden beast` number, since 11 + 19 + 598 + 38 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111959793 and 111959802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3109978 + ... + 3110013.

It is an arithmetic number, because the mean of its divisors is an integer number (20214974).

Almost surely, 2^111959838 is an apocalyptic number.

111959838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

111959838 is an abundant number, since it is smaller than the sum of its proper divisors (130619850).

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

111959838 is a wasteful number, since it uses less digits than its factorization.

111959838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6219999 (or 6219996 counting only the distinct ones).

The product of its digits is 77760, while the sum is 45.

The square root of 111959838 is about 10581.1075979786. The cubic root of 111959838 is about 481.9708292006.

The spelling of 111959838 in words is "one hundred eleven million, nine hundred fifty-nine thousand, eight hundred thirty-eight".