19869696037 has 2 divisors, whose sum is σ = 19869696038. Its totient is φ = 19869696036.

The previous prime is 19869695977. The next prime is 19869696083. The reversal of 19869696037 is 73069696891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11093566276 + 8776129761 = 105326^2 + 93681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19869696037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19869696037.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19869696097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9934848018 + 9934848019.

It is an arithmetic number, because the mean of its divisors is an integer number (9934848019).

Almost surely, 2^19869696037 is an apocalyptic number.

It is an amenable number.

19869696037 is a deficient number, since it is larger than the sum of its proper divisors (1).

19869696037 is an equidigital number, since it uses as much as digits as its factorization.

19869696037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26453952, while the sum is 64.

It can be divided in two parts, 1986969 and 6037, that added together give a triangular number (1993006 = T₁₉₉₆).

The spelling of 19869696037 in words is "nineteen billion, eight hundred sixty-nine million, six hundred ninety-six thousand, thirty-seven".