19275967957 has 2 divisors, whose sum is σ = 19275967958. Its totient is φ = 19275967956.

The previous prime is 19275967937. The next prime is 19275967993. The reversal of 19275967957 is 75976957291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15427130436 + 3848837521 = 124206^2 + 62039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19275967957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19275967892 and 19275967901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19275967937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9637983978 + 9637983979.

It is an arithmetic number, because the mean of its divisors is an integer number (9637983979).

Almost surely, 2^19275967957 is an apocalyptic number.

It is an amenable number.

19275967957 is a deficient number, since it is larger than the sum of its proper divisors (1).

19275967957 is an equidigital number, since it uses as much as digits as its factorization.

19275967957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75014100, while the sum is 67.

The spelling of 19275967957 in words is "nineteen billion, two hundred seventy-five million, nine hundred sixty-seven thousand, nine hundred fifty-seven".