111793891 has 16 divisors (see below), whose sum is σ = 129231360. Its totient is φ = 95640480.

The previous prime is 111793889. The next prime is 111793933. The reversal of 111793891 is 198397111.

It is a cyclic number.

It is not a de Polignac number, because 111793891 - 2¹ = 111793889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111793861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31110 + ... + 34516.

It is an arithmetic number, because the mean of its divisors is an integer number (8076960).

Almost surely, 2^111793891 is an apocalyptic number.

111793891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111793891 is a deficient number, since it is larger than the sum of its proper divisors (17437469).

111793891 is a wasteful number, since it uses less digits than its factorization.

111793891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594.

The product of its digits is 13608, while the sum is 40.

The square root of 111793891 is about 10573.2630251971. The cubic root of 111793891 is about 481.7325855486.

The spelling of 111793891 in words is "one hundred eleven million, seven hundred ninety-three thousand, eight hundred ninety-one".