18710193427 has 2 divisors, whose sum is σ = 18710193428. Its totient is φ = 18710193426.

The previous prime is 18710193391. The next prime is 18710193443. The reversal of 18710193427 is 72439101781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18710193427 - 2²⁷ = 18575975699 is a prime.

It is not a weakly prime, because it can be changed into another prime (18710143427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9355096713 + 9355096714.

It is an arithmetic number, because the mean of its divisors is an integer number (9355096714).

Almost surely, 2^18710193427 is an apocalyptic number.

18710193427 is a deficient number, since it is larger than the sum of its proper divisors (1).

18710193427 is an equidigital number, since it uses as much as digits as its factorization.

18710193427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 43.

The spelling of 18710193427 in words is "eighteen billion, seven hundred ten million, one hundred ninety-three thousand, four hundred twenty-seven".