18496450139 has 2 divisors, whose sum is σ = 18496450140. Its totient is φ = 18496450138.

The previous prime is 18496450103. The next prime is 18496450157. The reversal of 18496450139 is 93105469481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18496450139 - 2¹² = 18496446043 is a prime.

It is not a weakly prime, because it can be changed into another prime (18496440139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9248225069 + 9248225070.

It is an arithmetic number, because the mean of its divisors is an integer number (9248225070).

Almost surely, 2^18496450139 is an apocalyptic number.

18496450139 is a deficient number, since it is larger than the sum of its proper divisors (1).

18496450139 is an equidigital number, since it uses as much as digits as its factorization.

18496450139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 18496450139 in words is "eighteen billion, four hundred ninety-six million, four hundred fifty thousand, one hundred thirty-nine".