19348384996957 has 2 divisors, whose sum is σ = 19348384996958. Its totient is φ = 19348384996956.

The previous prime is 19348384996931. The next prime is 19348384997003. The reversal of 19348384996957 is 75969948384391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18706152653721 + 642232343236 = 4325061^2 + 801394^2 .

It is a cyclic number.

It is not a de Polignac number, because 19348384996957 - 2²³ = 19348376608349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19348384996357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9674192498478 + 9674192498479.

It is an arithmetic number, because the mean of its divisors is an integer number (9674192498479).

Almost surely, 2^{19348384996957} is an apocalyptic number.

It is an amenable number.

19348384996957 is a deficient number, since it is larger than the sum of its proper divisors (1).

19348384996957 is an equidigital number, since it uses as much as digits as its factorization.

19348384996957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12697896960, while the sum is 85.

The spelling of 19348384996957 in words is "nineteen trillion, three hundred forty-eight billion, three hundred eighty-four million, nine hundred ninety-six thousand, nine hundred fifty-seven".