18066944159 has 8 divisors (see below), whose sum is σ = 19714281552. Its totient is φ = 16420421440.

The previous prime is 18066944131. The next prime is 18066944173. The reversal of 18066944159 is 95144966081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18066944159 - 2⁸ = 18066943903 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 18066944159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18066944179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156824 + ... + 246429.

It is an arithmetic number, because the mean of its divisors is an integer number (2464285194).

Almost surely, 2^18066944159 is an apocalyptic number.

18066944159 is a deficient number, since it is larger than the sum of its proper divisors (1647337393).

18066944159 is a wasteful number, since it uses less digits than its factorization.

18066944159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407337.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 18066944159 in words is "eighteen billion, sixty-six million, nine hundred forty-four thousand, one hundred fifty-nine".