8464639318 has 4 divisors (see below), whose sum is σ = 12696958980. Its totient is φ = 4232319658.

The previous prime is 8464639237. The next prime is 8464639333. The reversal of 8464639318 is 8139364648.

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, 2116159828 + ... + 2116159831.

It is an arithmetic number, because the mean of its divisors is an integer number (3174239745).

Almost surely, 2^8464639318 is an apocalyptic number.

8464639318 is a deficient number, since it is larger than the sum of its proper divisors (4232319662).

8464639318 is a wasteful number, since it uses less digits than its factorization.

8464639318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232319661.

The product of its digits is 2985984, while the sum is 52.

The square root of 8464639318 is about 92003.4744887387. The cubic root of 8464639318 is about 2037.9936153989.

The spelling of 8464639318 in words is "eight billion, four hundred sixty-four million, six hundred thirty-nine thousand, three hundred eighteen".