109990080918 has 24 divisors (see below), whose sum is σ = 239559555456. Its totient is φ = 36471404400.

The previous prime is 109990080917. The next prime is 109990080947. The reversal of 109990080918 is 819080099901.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109990080911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15992793 + ... + 15999668.

It is an arithmetic number, because the mean of its divisors is an integer number (9981648144).

Almost surely, 2^109990080918 is an apocalyptic number.

109990080918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

109990080918 is an abundant number, since it is smaller than the sum of its proper divisors (129569474538).

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

109990080918 is a wasteful number, since it uses less digits than its factorization.

109990080918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31992660 (or 31992657 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 54.

The spelling of 109990080918 in words is "one hundred nine billion, nine hundred ninety million, eighty thousand, nine hundred eighteen".