18914518275 has 24 divisors (see below), whose sum is σ = 31276008624. Its totient is φ = 10086451200.

The previous prime is 18914518267. The next prime is 18914518307. The reversal of 18914518275 is 57281541981.

It is a happy number.

It is not a de Polignac number, because 18914518275 - 2³ = 18914518267 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 981735 + ... + 1000815.

It is an arithmetic number, because the mean of its divisors is an integer number (1303167026).

Almost surely, 2^18914518275 is an apocalyptic number.

18914518275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18914518275 is a deficient number, since it is larger than the sum of its proper divisors (12361490349).

18914518275 is a wasteful number, since it uses less digits than its factorization.

18914518275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32311 (or 32306 counting only the distinct ones).

The product of its digits is 806400, while the sum is 51.

The spelling of 18914518275 in words is "eighteen billion, nine hundred fourteen million, five hundred eighteen thousand, two hundred seventy-five".