18159008738 has 32 divisors (see below), whose sum is σ = 30922933440. Its totient is φ = 7928331840.

The previous prime is 18159008713. The next prime is 18159008741. The reversal of 18159008738 is 83780095181.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314756 + ... + 367952.

It is an arithmetic number, because the mean of its divisors is an integer number (966341670).

Almost surely, 2^18159008738 is an apocalyptic number.

18159008738 is a deficient number, since it is larger than the sum of its proper divisors (12763924702).

18159008738 is a wasteful number, since it uses less digits than its factorization.

18159008738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53922.

The product of its (nonzero) digits is 483840, while the sum is 50.

The spelling of 18159008738 in words is "eighteen billion, one hundred fifty-nine million, eight thousand, seven hundred thirty-eight".