111791892 has 12 divisors (see below), whose sum is σ = 260847776. Its totient is φ = 37263960.

The previous prime is 111791887. The next prime is 111791899. The reversal of 111791892 is 298197111.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×111791892³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111791892.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111791899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4657984 + ... + 4658007.

Almost surely, 2^111791892 is an apocalyptic number.

111791892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111791892 is an abundant number, since it is smaller than the sum of its proper divisors (149055884).

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

111791892 is a wasteful number, since it uses less digits than its factorization.

111791892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9315998 (or 9315996 counting only the distinct ones).

The product of its digits is 9072, while the sum is 39.

The square root of 111791892 is about 10573.1684938811. The cubic root of 111791892 is about 481.7297142254.

The spelling of 111791892 in words is "one hundred eleven million, seven hundred ninety-one thousand, eight hundred ninety-two".