19297115137 has 2 divisors, whose sum is σ = 19297115138. Its totient is φ = 19297115136.

The previous prime is 19297115119. The next prime is 19297115143. The reversal of 19297115137 is 73151179291.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13860117441 + 5436997696 = 117729^2 + 73736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19297115137 is a prime.

It is a super-2 number, since 2×19297115137² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19297115177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9648557568 + 9648557569.

It is an arithmetic number, because the mean of its divisors is an integer number (9648557569).

Almost surely, 2^19297115137 is an apocalyptic number.

It is an amenable number.

19297115137 is a deficient number, since it is larger than the sum of its proper divisors (1).

19297115137 is an equidigital number, since it uses as much as digits as its factorization.

19297115137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 46.

The spelling of 19297115137 in words is "nineteen billion, two hundred ninety-seven million, one hundred fifteen thousand, one hundred thirty-seven".