18110913975 has 324 divisors, whose sum is σ = 42576472848. Its totient is φ = 7202764800.

The previous prime is 18110913967. The next prime is 18110913979. The reversal of 18110913975 is 57931901181.

It is a happy number.

It is not a de Polignac number, because 18110913975 - 2³ = 18110913967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18110913975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18110913979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 323 ways as a sum of consecutive naturals, for example, 160273519 + ... + 160273631.

Almost surely, 2^18110913975 is an apocalyptic number.

18110913975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18110913975 is an abundant number, since it is smaller than the sum of its proper divisors (24465558873).

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

18110913975 is a wasteful number, since it uses less digits than its factorization.

18110913975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 45.

The spelling of 18110913975 in words is "eighteen billion, one hundred ten million, nine hundred thirteen thousand, nine hundred seventy-five".