18102066839 has 4 divisors (see below), whose sum is σ = 18202078440. Its totient is φ = 18002055240.

The previous prime is 18102066833. The next prime is 18102066841. The reversal of 18102066839 is 93866020181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93866020181 = 2557 ⋅36709433.

It is a cyclic number.

It is not a de Polignac number, because 18102066839 - 2⁴ = 18102066823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18102066839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18102066833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50005529 + ... + 50005890.

It is an arithmetic number, because the mean of its divisors is an integer number (4550519610).

Almost surely, 2^18102066839 is an apocalyptic number.

18102066839 is a deficient number, since it is larger than the sum of its proper divisors (100011601).

18102066839 is a wasteful number, since it uses less digits than its factorization.

18102066839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100011600.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 18102066839 in words is "eighteen billion, one hundred two million, sixty-six thousand, eight hundred thirty-nine".