18916299863 has 2 divisors, whose sum is σ = 18916299864. Its totient is φ = 18916299862.

The previous prime is 18916299781. The next prime is 18916299877. The reversal of 18916299863 is 36899261981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18916299863 - 2²⁰ = 18915251287 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18916299796 and 18916299805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18916299163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9458149931 + 9458149932.

It is an arithmetic number, because the mean of its divisors is an integer number (9458149932).

Almost surely, 2^18916299863 is an apocalyptic number.

18916299863 is a deficient number, since it is larger than the sum of its proper divisors (1).

18916299863 is an equidigital number, since it uses as much as digits as its factorization.

18916299863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10077696, while the sum is 62.

The spelling of 18916299863 in words is "eighteen billion, nine hundred sixteen million, two hundred ninety-nine thousand, eight hundred sixty-three".