19463850691 has 2 divisors, whose sum is σ = 19463850692. Its totient is φ = 19463850690.

The previous prime is 19463850587. The next prime is 19463850737. The reversal of 19463850691 is 19605836491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19463850691 - 2¹³ = 19463842499 is a prime.

It is not a weakly prime, because it can be changed into another prime (19463851691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9731925345 + 9731925346.

It is an arithmetic number, because the mean of its divisors is an integer number (9731925346).

Almost surely, 2^19463850691 is an apocalyptic number.

19463850691 is a deficient number, since it is larger than the sum of its proper divisors (1).

19463850691 is an equidigital number, since it uses as much as digits as its factorization.

19463850691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 19463850691 in words is "nineteen billion, four hundred sixty-three million, eight hundred fifty thousand, six hundred ninety-one".