18418868475 has 48 divisors (see below), whose sum is σ = 35513203200. Its totient is φ = 8420042400.

The previous prime is 18418868471. The next prime is 18418868477. The reversal of 18418868475 is 57486881481.

It is not a de Polignac number, because 18418868475 - 2² = 18418868471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18418868471) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 332271 + ... + 383720.

It is an arithmetic number, because the mean of its divisors is an integer number (739858400).

Almost surely, 2^18418868475 is an apocalyptic number.

18418868475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18418868475 is a deficient number, since it is larger than the sum of its proper divisors (17094334725).

18418868475 is an equidigital number, since it uses as much as digits as its factorization.

18418868475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716025 (or 716006 counting only the distinct ones).

The product of its digits is 13762560, while the sum is 60.

The spelling of 18418868475 in words is "eighteen billion, four hundred eighteen million, eight hundred sixty-eight thousand, four hundred seventy-five".