18914383139 has 2 divisors, whose sum is σ = 18914383140. Its totient is φ = 18914383138.

The previous prime is 18914383129. The next prime is 18914383171. The reversal of 18914383139 is 93138341981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18914383139 - 2⁴ = 18914383123 is a prime.

It is not a weakly prime, because it can be changed into another prime (18914383129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9457191569 + 9457191570.

It is an arithmetic number, because the mean of its divisors is an integer number (9457191570).

Almost surely, 2^18914383139 is an apocalyptic number.

18914383139 is a deficient number, since it is larger than the sum of its proper divisors (1).

18914383139 is an equidigital number, since it uses as much as digits as its factorization.

18914383139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 50.

The spelling of 18914383139 in words is "eighteen billion, nine hundred fourteen million, three hundred eighty-three thousand, one hundred thirty-nine".