18083987366 has 4 divisors (see below), whose sum is σ = 27125981052. Its totient is φ = 9041993682.

The previous prime is 18083987357. The next prime is 18083987413. The reversal of 18083987366 is 66378938081.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4520996840 + ... + 4520996843.

It is an arithmetic number, because the mean of its divisors is an integer number (6781495263).

Almost surely, 2^18083987366 is an apocalyptic number.

18083987366 is a deficient number, since it is larger than the sum of its proper divisors (9041993686).

18083987366 is an equidigital number, since it uses as much as digits as its factorization.

18083987366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9041993685.

The product of its (nonzero) digits is 10450944, while the sum is 59.

The spelling of 18083987366 in words is "eighteen billion, eighty-three million, nine hundred eighty-seven thousand, three hundred sixty-six".