18479696738 has 16 divisors (see below), whose sum is σ = 28997595000. Its totient is φ = 8820991872.

The previous prime is 18479696701. The next prime is 18479696743. The reversal of 18479696738 is 83769697481.

It can be written as a sum of positive squares in 4 ways, for example, as 17286201529 + 1193495209 = 131477^2 + 34547^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1784813 + ... + 1795136.

Almost surely, 2^18479696738 is an apocalyptic number.

18479696738 is a deficient number, since it is larger than the sum of its proper divisors (10517898262).

18479696738 is a wasteful number, since it uses less digits than its factorization.

18479696738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580069.

The product of its digits is 109734912, while the sum is 68.

The spelling of 18479696738 in words is "eighteen billion, four hundred seventy-nine million, six hundred ninety-six thousand, seven hundred thirty-eight".