8278738946 has 8 divisors (see below), whose sum is σ = 12418847100. Its totient is φ = 4139123248.

The previous prime is 8278738943. The next prime is 8278738987. The reversal of 8278738946 is 6498378728.

It can be written as a sum of positive squares in 2 ways, for example, as 6584511025 + 1694227921 = 81145^2 + 41161^2 .

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

It is not an unprimeable number, because it can be changed into a prime (8278738943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77741 + ... + 150336.

Almost surely, 2^8278738946 is an apocalyptic number.

8278738946 is a deficient number, since it is larger than the sum of its proper divisors (4140108154).

8278738946 is a wasteful number, since it uses less digits than its factorization.

8278738946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246228.

The product of its digits is 32514048, while the sum is 62.

The square root of 8278738946 is about 90987.5757782347. The cubic root of 8278738946 is about 2022.9635735383.

The spelling of 8278738946 in words is "eight billion, two hundred seventy-eight million, seven hundred thirty-eight thousand, nine hundred forty-six".