18108287423 has 2 divisors, whose sum is σ = 18108287424. Its totient is φ = 18108287422.

The previous prime is 18108287369. The next prime is 18108287429. The reversal of 18108287423 is 32478280181.

It is a strong prime.

It is an emirp because it is prime and its reverse (32478280181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18108287423 - 2⁸ = 18108287167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18108287429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9054143711 + 9054143712.

It is an arithmetic number, because the mean of its divisors is an integer number (9054143712).

Almost surely, 2^18108287423 is an apocalyptic number.

18108287423 is a deficient number, since it is larger than the sum of its proper divisors (1).

18108287423 is an equidigital number, since it uses as much as digits as its factorization.

18108287423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 18108287423 in words is "eighteen billion, one hundred eight million, two hundred eighty-seven thousand, four hundred twenty-three".