19612498597 has 2 divisors, whose sum is σ = 19612498598. Its totient is φ = 19612498596.

The previous prime is 19612498583. The next prime is 19612498603. The reversal of 19612498597 is 79589421691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13901824836 + 5710673761 = 117906^2 + 75569^2 .

It is a cyclic number.

It is not a de Polignac number, because 19612498597 - 2⁷ = 19612498469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19612498097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9806249298 + 9806249299.

It is an arithmetic number, because the mean of its divisors is an integer number (9806249299).

Almost surely, 2^19612498597 is an apocalyptic number.

It is an amenable number.

19612498597 is a deficient number, since it is larger than the sum of its proper divisors (1).

19612498597 is an equidigital number, since it uses as much as digits as its factorization.

19612498597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 61.

The spelling of 19612498597 in words is "nineteen billion, six hundred twelve million, four hundred ninety-eight thousand, five hundred ninety-seven".