18674039 has 4 divisors (see below), whose sum is σ = 18952824. Its totient is φ = 18395256.

The previous prime is 18674023. The next prime is 18674063. The reversal of 18674039 is 93047681.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18674039 - 2⁴ = 18674023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18673993 and 18674011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18674009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139292 + ... + 139425.

It is an arithmetic number, because the mean of its divisors is an integer number (4738206).

Almost surely, 2^18674039 is an apocalyptic number.

18674039 is a deficient number, since it is larger than the sum of its proper divisors (278785).

18674039 is an equidigital number, since it uses as much as digits as its factorization.

18674039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278784.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 18674039 is about 4321.3468965127. The cubic root of 18674039 is about 265.3053984729.

The spelling of 18674039 in words is "eighteen million, six hundred seventy-four thousand, thirty-nine".