18475966 has 8 divisors (see below), whose sum is σ = 28048104. Its totient is φ = 9126600.

The previous prime is 18475931. The next prime is 18475973. The reversal of 18475966 is 66957481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18475966² = 682722639266312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55485 + ... + 55816.

It is an arithmetic number, because the mean of its divisors is an integer number (3506013).

Almost surely, 2^18475966 is an apocalyptic number.

18475966 is a deficient number, since it is larger than the sum of its proper divisors (9572138).

18475966 is a wasteful number, since it uses less digits than its factorization.

18475966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111386.

The product of its digits is 362880, while the sum is 46.

The square root of 18475966 is about 4298.3678297698. The cubic root of 18475966 is about 264.3640428442.

The spelling of 18475966 in words is "eighteen million, four hundred seventy-five thousand, nine hundred sixty-six".