18008622851 has 2 divisors, whose sum is σ = 18008622852. Its totient is φ = 18008622850.

The previous prime is 18008622833. The next prime is 18008622857. The reversal of 18008622851 is 15822680081.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18008622851 - 2²⁶ = 17941513987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18008622799 and 18008622808.

It is not a weakly prime, because it can be changed into another prime (18008622857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9004311425 + 9004311426.

It is an arithmetic number, because the mean of its divisors is an integer number (9004311426).

Almost surely, 2^18008622851 is an apocalyptic number.

18008622851 is a deficient number, since it is larger than the sum of its proper divisors (1).

18008622851 is an equidigital number, since it uses as much as digits as its factorization.

18008622851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61440, while the sum is 41.

The spelling of 18008622851 in words is "eighteen billion, eight million, six hundred twenty-two thousand, eight hundred fifty-one".