19119807937 has 2 divisors, whose sum is σ = 19119807938. Its totient is φ = 19119807936.

The previous prime is 19119807871. The next prime is 19119807961. The reversal of 19119807937 is 73970891191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16108432561 + 3011375376 = 126919^2 + 54876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19119807937 is a prime.

It is not a weakly prime, because it can be changed into another prime (19119807437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9559903968 + 9559903969.

It is an arithmetic number, because the mean of its divisors is an integer number (9559903969).

Almost surely, 2^19119807937 is an apocalyptic number.

It is an amenable number.

19119807937 is a deficient number, since it is larger than the sum of its proper divisors (1).

19119807937 is an equidigital number, since it uses as much as digits as its factorization.

19119807937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 55.

The spelling of 19119807937 in words is "nineteen billion, one hundred nineteen million, eight hundred seven thousand, nine hundred thirty-seven".