19270312513 has 2 divisors, whose sum is σ = 19270312514. Its totient is φ = 19270312512.

The previous prime is 19270312511. The next prime is 19270312519. The reversal of 19270312513 is 31521307291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10737726129 + 8532586384 = 103623^2 + 92372^2 .

It is a cyclic number.

It is not a de Polignac number, because 19270312513 - 2¹ = 19270312511 is a prime.

Together with 19270312511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (19270312511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9635156256 + 9635156257.

It is an arithmetic number, because the mean of its divisors is an integer number (9635156257).

Almost surely, 2^19270312513 is an apocalyptic number.

It is an amenable number.

19270312513 is a deficient number, since it is larger than the sum of its proper divisors (1).

19270312513 is an equidigital number, since it uses as much as digits as its factorization.

19270312513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The spelling of 19270312513 in words is "nineteen billion, two hundred seventy million, three hundred twelve thousand, five hundred thirteen".