18739714843 has 2 divisors, whose sum is σ = 18739714844. Its totient is φ = 18739714842.

The previous prime is 18739714841. The next prime is 18739714849. The reversal of 18739714843 is 34841793781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18739714843 - 2¹ = 18739714841 is a prime.

Together with 18739714841, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18739714841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9369857421 + 9369857422.

It is an arithmetic number, because the mean of its divisors is an integer number (9369857422).

Almost surely, 2^18739714843 is an apocalyptic number.

18739714843 is a deficient number, since it is larger than the sum of its proper divisors (1).

18739714843 is an equidigital number, since it uses as much as digits as its factorization.

18739714843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 55.

The spelling of 18739714843 in words is "eighteen billion, seven hundred thirty-nine million, seven hundred fourteen thousand, eight hundred forty-three".