18629404 has 18 divisors (see below), whose sum is σ = 32996040. Its totient is φ = 9203256.

The previous prime is 18629393. The next prime is 18629407. The reversal of 18629404 is 40492681.

It is a self number, because there is not a number n which added to its sum of digits gives 18629404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18629407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42217 + ... + 42655.

Almost surely, 2^18629404 is an apocalyptic number.

It is an amenable number.

18629404 is a deficient number, since it is larger than the sum of its proper divisors (14366636).

18629404 is a wasteful number, since it uses less digits than its factorization.

18629404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 18629404 is about 4316.1793289899. The cubic root of 18629404 is about 265.0938507030.

The spelling of 18629404 in words is "eighteen million, six hundred twenty-nine thousand, four hundred four".