8318278947 has 18 divisors (see below), whose sum is σ = 12193523524. Its totient is φ = 5040328040.

The previous prime is 8318278937. The next prime is 8318278951. The reversal of 8318278947 is 7498728138.

It is not a de Polignac number, because 8318278947 - 2¹⁸ = 8318016803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8318278937) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1735288 + ... + 1740074.

Almost surely, 2^8318278947 is an apocalyptic number.

8318278947 is a deficient number, since it is larger than the sum of its proper divisors (3875244577).

8318278947 is an frugal number, since it uses more digits than its factorization.

8318278947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9599 (or 4801 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 57.

The square root of 8318278947 is about 91204.5993741544. The cubic root of 8318278947 is about 2026.1790783713.

The spelling of 8318278947 in words is "eight billion, three hundred eighteen million, two hundred seventy-eight thousand, nine hundred forty-seven".