18749476 has 6 divisors (see below), whose sum is σ = 32811590. Its totient is φ = 9374736.

The previous prime is 18749473. The next prime is 18749477. The reversal of 18749476 is 67494781.

It can be written as a sum of positive squares in only one way, i.e., 18748900 + 576 = 4330^2 + 24^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18749473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2343681 + ... + 2343688.

Almost surely, 2^18749476 is an apocalyptic number.

It is an amenable number.

18749476 is a deficient number, since it is larger than the sum of its proper divisors (14062114).

18749476 is a wasteful number, since it uses less digits than its factorization.

18749476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687373 (or 4687371 counting only the distinct ones).

The product of its digits is 338688, while the sum is 46.

The square root of 18749476 is about 4330.0665121912. The cubic root of 18749476 is about 265.6621674589.

The spelling of 18749476 in words is "eighteen million, seven hundred forty-nine thousand, four hundred seventy-six".