18798355943 has 2 divisors, whose sum is σ = 18798355944. Its totient is φ = 18798355942.

The previous prime is 18798355937. The next prime is 18798355963. The reversal of 18798355943 is 34955389781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18798355943 - 2⁸ = 18798355687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18798355903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9399177971 + 9399177972.

It is an arithmetic number, because the mean of its divisors is an integer number (9399177972).

Almost surely, 2^18798355943 is an apocalyptic number.

18798355943 is a deficient number, since it is larger than the sum of its proper divisors (1).

18798355943 is an equidigital number, since it uses as much as digits as its factorization.

18798355943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32659200, while the sum is 62.

The spelling of 18798355943 in words is "eighteen billion, seven hundred ninety-eight million, three hundred fifty-five thousand, nine hundred forty-three".