19461242863 has 2 divisors, whose sum is σ = 19461242864. Its totient is φ = 19461242862.

The previous prime is 19461242851. The next prime is 19461242887. The reversal of 19461242863 is 36824216491.

It is a weak prime.

It is an emirp because it is prime and its reverse (36824216491) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19461242863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19461242893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9730621431 + 9730621432.

It is an arithmetic number, because the mean of its divisors is an integer number (9730621432).

Almost surely, 2^19461242863 is an apocalyptic number.

19461242863 is a deficient number, since it is larger than the sum of its proper divisors (1).

19461242863 is an equidigital number, since it uses as much as digits as its factorization.

19461242863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 46.

The spelling of 19461242863 in words is "nineteen billion, four hundred sixty-one million, two hundred forty-two thousand, eight hundred sixty-three".