18163039 has 2 divisors, whose sum is σ = 18163040. Its totient is φ = 18163038.

The previous prime is 18163003. The next prime is 18163063. The reversal of 18163039 is 93036181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18163039 - 2¹³ = 18154847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18163039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18163339) 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, 9081519 + 9081520.

It is an arithmetic number, because the mean of its divisors is an integer number (9081520).

Almost surely, 2^18163039 is an apocalyptic number.

18163039 is a deficient number, since it is larger than the sum of its proper divisors (1).

18163039 is an equidigital number, since it uses as much as digits as its factorization.

18163039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 18163039 is about 4261.8117039588. The cubic root of 18163039 is about 262.8630272700.

The spelling of 18163039 in words is "eighteen million, one hundred sixty-three thousand, thirty-nine".