18110399 has 2 divisors, whose sum is σ = 18110400. Its totient is φ = 18110398.

The previous prime is 18110383. The next prime is 18110431. The reversal of 18110399 is 99301181.

It is an a-pointer prime, because the next prime (18110431) can be obtained adding 18110399 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18110399 - 2⁴ = 18110383 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18110329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9055199 + 9055200.

It is an arithmetic number, because the mean of its divisors is an integer number (9055200).

Almost surely, 2^18110399 is an apocalyptic number.

18110399 is a deficient number, since it is larger than the sum of its proper divisors (1).

18110399 is an equidigital number, since it uses as much as digits as its factorization.

18110399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 18110399 is about 4255.6314455084. The cubic root of 18110399 is about 262.6088389179.

The spelling of 18110399 in words is "eighteen million, one hundred ten thousand, three hundred ninety-nine".