18818475 has 24 divisors (see below), whose sum is σ = 33508272. Its totient is φ = 9264000.

The previous prime is 18818461. The next prime is 18818489. The reversal of 18818475 is 57481881.

It is an interprime number because it is at equal distance from previous prime (18818461) and next prime (18818489).

It is not a de Polignac number, because 18818475 - 2¹⁶ = 18752939 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, 8676 + ... + 10625.

It is an arithmetic number, because the mean of its divisors is an integer number (1396178).

Almost surely, 2^18818475 is an apocalyptic number.

18818475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18818475 is a deficient number, since it is larger than the sum of its proper divisors (14689797).

18818475 is a wasteful number, since it uses less digits than its factorization.

18818475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19327 (or 19322 counting only the distinct ones).

The product of its digits is 71680, while the sum is 42.

The square root of 18818475 is about 4338.0266250912. The cubic root of 18818475 is about 265.9876518285.

The spelling of 18818475 in words is "eighteen million, eight hundred eighteen thousand, four hundred seventy-five".