19253491213813 has 2 divisors, whose sum is σ = 19253491213814. Its totient is φ = 19253491213812.

The previous prime is 19253491213753. The next prime is 19253491213823. The reversal of 19253491213813 is 31831219435291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12924729629604 + 6328761584209 = 3595098^2 + 2515703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19253491213813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19253491213823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9626745606906 + 9626745606907.

It is an arithmetic number, because the mean of its divisors is an integer number (9626745606907).

Almost surely, 2^{19253491213813} is an apocalyptic number.

It is an amenable number.

19253491213813 is a deficient number, since it is larger than the sum of its proper divisors (1).

19253491213813 is an equidigital number, since it uses as much as digits as its factorization.

19253491213813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 52.

The spelling of 19253491213813 in words is "nineteen trillion, two hundred fifty-three billion, four hundred ninety-one million, two hundred thirteen thousand, eight hundred thirteen".