18475975 has 24 divisors (see below), whose sum is σ = 26569728. Its totient is φ = 12482400.

The previous prime is 18475973. The next prime is 18475979. The reversal of 18475975 is 57957481.

It is a happy number.

It is not a de Polignac number, because 18475975 - 2¹ = 18475973 is a prime.

It is a Duffinian number.

Its product of digits (352800) is a multiple of the sum of its prime factors (1575).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18475973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11682 + ... + 13168.

It is an arithmetic number, because the mean of its divisors is an integer number (1107072).

Almost surely, 2^18475975 is an apocalyptic number.

18475975 is a deficient number, since it is larger than the sum of its proper divisors (8093753).

18475975 is a wasteful number, since it uses less digits than its factorization.

18475975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1570 counting only the distinct ones).

The product of its digits is 352800, while the sum is 46.

The square root of 18475975 is about 4298.3688766787. The cubic root of 18475975 is about 264.3640857699.

The spelling of 18475975 in words is "eighteen million, four hundred seventy-five thousand, nine hundred seventy-five".