18039046 has 4 divisors (see below), whose sum is σ = 27058572. Its totient is φ = 9019522.

The previous prime is 18039029. The next prime is 18039067. The reversal of 18039046 is 64093081.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 18038999 and 18039017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4509760 + ... + 4509763.

It is an arithmetic number, because the mean of its divisors is an integer number (6764643).

Almost surely, 2^18039046 is an apocalyptic number.

18039046 is a deficient number, since it is larger than the sum of its proper divisors (9019526).

18039046 is an equidigital number, since it uses as much as digits as its factorization.

18039046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9019525.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 18039046 is about 4247.2398095704. The cubic root of 18039046 is about 262.2635015797.

The spelling of 18039046 in words is "eighteen million, thirty-nine thousand, forty-six".