18109076231 has 2 divisors, whose sum is σ = 18109076232. Its totient is φ = 18109076230.

The previous prime is 18109076113. The next prime is 18109076257. The reversal of 18109076231 is 13267090181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18109076231 - 2²⁶ = 18041967367 is a prime.

It is a super-2 number, since 2×18109076231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18109076261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9054538115 + 9054538116.

It is an arithmetic number, because the mean of its divisors is an integer number (9054538116).

Almost surely, 2^18109076231 is an apocalyptic number.

18109076231 is a deficient number, since it is larger than the sum of its proper divisors (1).

18109076231 is an equidigital number, since it uses as much as digits as its factorization.

18109076231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 18109076231 in words is "eighteen billion, one hundred nine million, seventy-six thousand, two hundred thirty-one".