18943475 has 18 divisors (see below), whose sum is σ = 24803100. Its totient is φ = 14350320.

The previous prime is 18943469. The next prime is 18943481. The reversal of 18943475 is 57434981.

It is an interprime number because it is at equal distance from previous prime (18943469) and next prime (18943481).

It is not a de Polignac number, because 18943475 - 2¹² = 18939379 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7976 + ... + 10074.

It is an arithmetic number, because the mean of its divisors is an integer number (1377950).

Almost surely, 2^18943475 is an apocalyptic number.

18943475 is a deficient number, since it is larger than the sum of its proper divisors (5859625).

18943475 is a wasteful number, since it uses less digits than its factorization.

18943475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147 (or 2123 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 18943475 is about 4352.4102518030. The cubic root of 18943475 is about 266.5752855294.

The spelling of 18943475 in words is "eighteen million, nine hundred forty-three thousand, four hundred seventy-five".