111890445018 has 16 divisors (see below), whose sum is σ = 244124607456. Its totient is φ = 33906195440.

The previous prime is 111890445001. The next prime is 111890445059. The reversal of 111890445018 is 810544098111.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847654821 + ... + 847654952.

It is an arithmetic number, because the mean of its divisors is an integer number (15257787966).

Almost surely, 2^111890445018 is an apocalyptic number.

111890445018 is an abundant number, since it is smaller than the sum of its proper divisors (132234162438).

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

111890445018 is a wasteful number, since it uses less digits than its factorization.

111890445018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695309789.

The product of its (nonzero) digits is 46080, while the sum is 42.

The spelling of 111890445018 in words is "one hundred eleven billion, eight hundred ninety million, four hundred forty-five thousand, eighteen".