18255290507 has 2 divisors, whose sum is σ = 18255290508. Its totient is φ = 18255290506.

The previous prime is 18255290503. The next prime is 18255290519. The reversal of 18255290507 is 70509255281.

It is a weak prime.

It is an emirp because it is prime and its reverse (70509255281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18255290507 - 2² = 18255290503 is a prime.

It is not a weakly prime, because it can be changed into another prime (18255290503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9127645253 + 9127645254.

It is an arithmetic number, because the mean of its divisors is an integer number (9127645254).

Almost surely, 2^18255290507 is an apocalyptic number.

18255290507 is a deficient number, since it is larger than the sum of its proper divisors (1).

18255290507 is an equidigital number, since it uses as much as digits as its factorization.

18255290507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 44.

The spelling of 18255290507 in words is "eighteen billion, two hundred fifty-five million, two hundred ninety thousand, five hundred seven".