18674642 has 32 divisors (see below), whose sum is σ = 33318912. Its totient is φ = 7683984.

The previous prime is 18674627. The next prime is 18674657. The reversal of 18674642 is 24647681.

It is an interprime number because it is at equal distance from previous prime (18674627) and next prime (18674657).

It is a junction number, because it is equal to n+sod(n) for n = 18674596 and 18674605.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40103 + ... + 40565.

It is an arithmetic number, because the mean of its divisors is an integer number (1041216).

Almost surely, 2^18674642 is an apocalyptic number.

18674642 is a deficient number, since it is larger than the sum of its proper divisors (14644270).

18674642 is a wasteful number, since it uses less digits than its factorization.

18674642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582.

The product of its digits is 64512, while the sum is 38.

The square root of 18674642 is about 4321.4166658632. The cubic root of 18674642 is about 265.3082540850.

The spelling of 18674642 in words is "eighteen million, six hundred seventy-four thousand, six hundred forty-two".