190317811513 has 2 divisors, whose sum is σ = 190317811514. Its totient is φ = 190317811512.

The previous prime is 190317811507. The next prime is 190317811559. The reversal of 190317811513 is 315118713091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103125761424 + 87192050089 = 321132^2 + 295283^2 .

It is a cyclic number.

It is not a de Polignac number, because 190317811513 - 2²¹ = 190315714361 is a prime.

It is not a weakly prime, because it can be changed into another prime (190317811813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95158905756 + 95158905757.

It is an arithmetic number, because the mean of its divisors is an integer number (95158905757).

Almost surely, 2^190317811513 is an apocalyptic number.

It is an amenable number.

190317811513 is a deficient number, since it is larger than the sum of its proper divisors (1).

190317811513 is an equidigital number, since it uses as much as digits as its factorization.

190317811513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 40.

The spelling of 190317811513 in words is "one hundred ninety billion, three hundred seventeen million, eight hundred eleven thousand, five hundred thirteen".