18650462813 has 2 divisors, whose sum is σ = 18650462814. Its totient is φ = 18650462812.

The previous prime is 18650462807. The next prime is 18650462821. The reversal of 18650462813 is 31826405681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13059461284 + 5591001529 = 114278^2 + 74773^2 .

It is a cyclic number.

It is not a de Polignac number, because 18650462813 - 2⁸ = 18650462557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18650462843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9325231406 + 9325231407.

It is an arithmetic number, because the mean of its divisors is an integer number (9325231407).

Almost surely, 2^18650462813 is an apocalyptic number.

It is an amenable number.

18650462813 is a deficient number, since it is larger than the sum of its proper divisors (1).

18650462813 is an equidigital number, since it uses as much as digits as its factorization.

18650462813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 18650462813 in words is "eighteen billion, six hundred fifty million, four hundred sixty-two thousand, eight hundred thirteen".