18082407251 has 2 divisors, whose sum is σ = 18082407252. Its totient is φ = 18082407250.

The previous prime is 18082407139. The next prime is 18082407253. The reversal of 18082407251 is 15270428081.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18082407251 is a prime.

Together with 18082407253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18082407253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9041203625 + 9041203626.

It is an arithmetic number, because the mean of its divisors is an integer number (9041203626).

Almost surely, 2^18082407251 is an apocalyptic number.

18082407251 is a deficient number, since it is larger than the sum of its proper divisors (1).

18082407251 is an equidigital number, since it uses as much as digits as its factorization.

18082407251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 38.

The spelling of 18082407251 in words is "eighteen billion, eighty-two million, four hundred seven thousand, two hundred fifty-one".