18649035139 has 16 divisors (see below), whose sum is σ = 22583232000. Its totient is φ = 15033711744.

The previous prime is 18649035109. The next prime is 18649035151. The reversal of 18649035139 is 93153094681.

It is a cyclic number.

It is not a de Polignac number, because 18649035139 - 2¹³ = 18649026947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18649035092 and 18649035101.

It is not an unprimeable number, because it can be changed into a prime (18649035109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110472 + ... + 222490.

It is an arithmetic number, because the mean of its divisors is an integer number (1411452000).

Almost surely, 2^18649035139 is an apocalyptic number.

18649035139 is a deficient number, since it is larger than the sum of its proper divisors (3934196861).

18649035139 is a wasteful number, since it uses less digits than its factorization.

18649035139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113442.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 18649035139 in words is "eighteen billion, six hundred forty-nine million, thirty-five thousand, one hundred thirty-nine".