18071431199 has 2 divisors, whose sum is σ = 18071431200. Its totient is φ = 18071431198.

The previous prime is 18071431187. The next prime is 18071431211. The reversal of 18071431199 is 99113417081.

It is a balanced prime because it is at equal distance from previous prime (18071431187) and next prime (18071431211).

It is a cyclic number.

It is not a de Polignac number, because 18071431199 - 2³² = 13776463903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18071431159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9035715599 + 9035715600.

It is an arithmetic number, because the mean of its divisors is an integer number (9035715600).

Almost surely, 2^18071431199 is an apocalyptic number.

18071431199 is a deficient number, since it is larger than the sum of its proper divisors (1).

18071431199 is an equidigital number, since it uses as much as digits as its factorization.

18071431199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 44.

The spelling of 18071431199 in words is "eighteen billion, seventy-one million, four hundred thirty-one thousand, one hundred ninety-nine".