18842717339 has 4 divisors (see below), whose sum is σ = 18861173520. Its totient is φ = 18824261160.

The previous prime is 18842717237. The next prime is 18842717351. The reversal of 18842717339 is 93371724881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93371724881 = 8297 ⋅11253673.

It is a cyclic number.

It is not a de Polignac number, because 18842717339 - 2¹² = 18842713243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18842717389) 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, 9226559 + ... + 9228600.

It is an arithmetic number, because the mean of its divisors is an integer number (4715293380).

Almost surely, 2^18842717339 is an apocalyptic number.

18842717339 is a deficient number, since it is larger than the sum of its proper divisors (18456181).

18842717339 is a wasteful number, since it uses less digits than its factorization.

18842717339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18456180.

The product of its digits is 2032128, while the sum is 53.

The spelling of 18842717339 in words is "eighteen billion, eight hundred forty-two million, seven hundred seventeen thousand, three hundred thirty-nine".