18274859663 has 2 divisors, whose sum is σ = 18274859664. Its totient is φ = 18274859662.

The previous prime is 18274859627. The next prime is 18274859717. The reversal of 18274859663 is 36695847281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18274859663 - 2²² = 18270665359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18274859363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9137429831 + 9137429832.

It is an arithmetic number, because the mean of its divisors is an integer number (9137429832).

Almost surely, 2^18274859663 is an apocalyptic number.

18274859663 is a deficient number, since it is larger than the sum of its proper divisors (1).

18274859663 is an equidigital number, since it uses as much as digits as its factorization.

18274859663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 59.

The spelling of 18274859663 in words is "eighteen billion, two hundred seventy-four million, eight hundred fifty-nine thousand, six hundred sixty-three".