18214786139 has 16 divisors (see below), whose sum is σ = 20035002240. Its totient is φ = 16422120000.

The previous prime is 18214786133. The next prime is 18214786159. The reversal of 18214786139 is 93168741281.

It is a happy number.

It is not a de Polignac number, because 18214786139 - 2²⁸ = 17946350683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18214786133) 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, 3137039 + ... + 3142839.

It is an arithmetic number, because the mean of its divisors is an integer number (1252187640).

Almost surely, 2^18214786139 is an apocalyptic number.

18214786139 is a deficient number, since it is larger than the sum of its proper divisors (1820216101).

18214786139 is a wasteful number, since it uses less digits than its factorization.

18214786139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8122.

The product of its digits is 580608, while the sum is 50.

The spelling of 18214786139 in words is "eighteen billion, two hundred fourteen million, seven hundred eighty-six thousand, one hundred thirty-nine".