18670170139 has 2 divisors, whose sum is σ = 18670170140. Its totient is φ = 18670170138.

The previous prime is 18670170131. The next prime is 18670170187. The reversal of 18670170139 is 93107107681.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18670170139 - 2³ = 18670170131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18670170095 and 18670170104.

It is not a weakly prime, because it can be changed into another prime (18670170131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9335085069 + 9335085070.

It is an arithmetic number, because the mean of its divisors is an integer number (9335085070).

Almost surely, 2^18670170139 is an apocalyptic number.

18670170139 is a deficient number, since it is larger than the sum of its proper divisors (1).

18670170139 is an equidigital number, since it uses as much as digits as its factorization.

18670170139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 43.

The spelling of 18670170139 in words is "eighteen billion, six hundred seventy million, one hundred seventy thousand, one hundred thirty-nine".