18954871339 has 2 divisors, whose sum is σ = 18954871340. Its totient is φ = 18954871338.

The previous prime is 18954871289. The next prime is 18954871373. The reversal of 18954871339 is 93317845981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18954871339 - 2²⁵ = 18921316907 is a prime.

It is not a weakly prime, because it can be changed into another prime (18954871379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9477435669 + 9477435670.

It is an arithmetic number, because the mean of its divisors is an integer number (9477435670).

Almost surely, 2^18954871339 is an apocalyptic number.

18954871339 is a deficient number, since it is larger than the sum of its proper divisors (1).

18954871339 is an equidigital number, since it uses as much as digits as its factorization.

18954871339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 58.

The spelling of 18954871339 in words is "eighteen billion, nine hundred fifty-four million, eight hundred seventy-one thousand, three hundred thirty-nine".