111864181892 has 6 divisors (see below), whose sum is σ = 195762318318. Its totient is φ = 55932090944.

The previous prime is 111864181883. The next prime is 111864181903. The reversal of 111864181892 is 298181468111.

It can be written as a sum of positive squares in only one way, i.e., 109783544896 + 2080636996 = 331336^2 + 45614^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111864181892.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13983022733 + ... + 13983022740.

It is an arithmetic number, because the mean of its divisors is an integer number (32627053053).

Almost surely, 2^111864181892 is an apocalyptic number.

It is an amenable number.

111864181892 is a deficient number, since it is larger than the sum of its proper divisors (83898136426).

111864181892 is a wasteful number, since it uses less digits than its factorization.

111864181892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27966045477 (or 27966045475 counting only the distinct ones).

The product of its digits is 221184, while the sum is 50.

The spelling of 111864181892 in words is "one hundred eleven billion, eight hundred sixty-four million, one hundred eighty-one thousand, eight hundred ninety-two".