18120949926 has 8 divisors (see below), whose sum is σ = 36241899864. Its totient is φ = 6040316640.

The previous prime is 18120949919. The next prime is 18120949967. The reversal of 18120949926 is 62994902181.

It is a sphenic number, since it is the product of 3 distinct primes.

18120949926 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1510079155 + ... + 1510079166.

It is an arithmetic number, because the mean of its divisors is an integer number (4530237483).

Almost surely, 2^18120949926 is an apocalyptic number.

18120949926 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18120949926 is a wasteful number, since it uses less digits than its factorization.

18120949926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020158326.

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 18120949926 in words is "eighteen billion, one hundred twenty million, nine hundred forty-nine thousand, nine hundred twenty-six".