18075474 has 20 divisors (see below), whose sum is σ = 40502814. Its totient is φ = 6025104.

The previous prime is 18075469. The next prime is 18075481. The reversal of 18075474 is 47457081.

18075474 is a `hidden beast` number, since 180 + 7 + 5 + 474 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16769025 + 1306449 = 4095^2 + 1143^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 55627 + ... + 55950.

Almost surely, 2^18075474 is an apocalyptic number.

18075474 is an abundant number, since it is smaller than the sum of its proper divisors (22427340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18075474 is a wasteful number, since it uses less digits than its factorization.

18075474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111591 (or 111582 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 18075474 is about 4251.5260789509. The cubic root of 18075474 is about 262.4399209445.

The spelling of 18075474 in words is "eighteen million, seventy-five thousand, four hundred seventy-four".