19496065837 has 2 divisors, whose sum is σ = 19496065838. Its totient is φ = 19496065836.

The previous prime is 19496065811. The next prime is 19496065859. The reversal of 19496065837 is 73856069491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18196391236 + 1299674601 = 134894^2 + 36051^2 .

It is a cyclic number.

It is not a de Polignac number, because 19496065837 - 2⁷ = 19496065709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19496065877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9748032918 + 9748032919.

It is an arithmetic number, because the mean of its divisors is an integer number (9748032919).

Almost surely, 2^19496065837 is an apocalyptic number.

It is an amenable number.

19496065837 is a deficient number, since it is larger than the sum of its proper divisors (1).

19496065837 is an equidigital number, since it uses as much as digits as its factorization.

19496065837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 19496065837 in words is "nineteen billion, four hundred ninety-six million, sixty-five thousand, eight hundred thirty-seven".