18793039 has 2 divisors, whose sum is σ = 18793040. Its totient is φ = 18793038.

The previous prime is 18793013. The next prime is 18793051. The reversal of 18793039 is 93039781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18793039 - 2⁷ = 18792911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18792992 and 18793010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18793069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9396519 + 9396520.

It is an arithmetic number, because the mean of its divisors is an integer number (9396520).

Almost surely, 2^18793039 is an apocalyptic number.

18793039 is a deficient number, since it is larger than the sum of its proper divisors (1).

18793039 is an equidigital number, since it uses as much as digits as its factorization.

18793039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 18793039 is about 4335.0938859499. The cubic root of 18793039 is about 265.8677570181.

The spelling of 18793039 in words is "eighteen million, seven hundred ninety-three thousand, thirty-nine".