19612214813 has 2 divisors, whose sum is σ = 19612214814. Its totient is φ = 19612214812.

The previous prime is 19612214803. The next prime is 19612214819. The reversal of 19612214813 is 31841221691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12874760089 + 6737454724 = 113467^2 + 82082^2 .

It is a cyclic number.

It is not a de Polignac number, because 19612214813 - 2²⁶ = 19545105949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19612214819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9806107406 + 9806107407.

It is an arithmetic number, because the mean of its divisors is an integer number (9806107407).

Almost surely, 2^19612214813 is an apocalyptic number.

It is an amenable number.

19612214813 is a deficient number, since it is larger than the sum of its proper divisors (1).

19612214813 is an equidigital number, since it uses as much as digits as its factorization.

19612214813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 38.

The spelling of 19612214813 in words is "nineteen billion, six hundred twelve million, two hundred fourteen thousand, eight hundred thirteen".