18115113458 has 16 divisors (see below), whose sum is σ = 29273783616. Its totient is φ = 8357705040.

The previous prime is 18115113431. The next prime is 18115113473. The reversal of 18115113458 is 85431151181.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58016 + ... + 198987.

It is an arithmetic number, because the mean of its divisors is an integer number (1829611476).

Almost surely, 2^18115113458 is an apocalyptic number.

18115113458 is a deficient number, since it is larger than the sum of its proper divisors (11158670158).

18115113458 is a wasteful number, since it uses less digits than its factorization.

18115113458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259729.

The product of its digits is 19200, while the sum is 38.

The spelling of 18115113458 in words is "eighteen billion, one hundred fifteen million, one hundred thirteen thousand, four hundred fifty-eight".