18500896313 has 2 divisors, whose sum is σ = 18500896314. Its totient is φ = 18500896312.

The previous prime is 18500896307. The next prime is 18500896361. The reversal of 18500896313 is 31369800581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17996759104 + 504137209 = 134152^2 + 22453^2 .

It is a cyclic number.

It is not a de Polignac number, because 18500896313 - 2¹² = 18500892217 is a prime.

It is not a weakly prime, because it can be changed into another prime (18500896373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9250448156 + 9250448157.

It is an arithmetic number, because the mean of its divisors is an integer number (9250448157).

Almost surely, 2^18500896313 is an apocalyptic number.

It is an amenable number.

18500896313 is a deficient number, since it is larger than the sum of its proper divisors (1).

18500896313 is an equidigital number, since it uses as much as digits as its factorization.

18500896313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 18500896313 in words is "eighteen billion, five hundred million, eight hundred ninety-six thousand, three hundred thirteen".