8461800947 has 18 divisors (see below), whose sum is σ = 8972714772. Its totient is φ = 7978164744.

The previous prime is 8461800937. The next prime is 8461800953. The reversal of 8461800947 is 7490081648.

It is not a de Polignac number, because 8461800947 - 2⁶ = 8461800883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8461800937) 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, 19274954 + ... + 19275392.

It is an arithmetic number, because the mean of its divisors is an integer number (498484154).

Almost surely, 2^8461800947 is an apocalyptic number.

8461800947 is a deficient number, since it is larger than the sum of its proper divisors (510913825).

8461800947 is an frugal number, since it uses more digits than its factorization.

8461800947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 8461800947 is about 91988.0478486200. The cubic root of 8461800947 is about 2037.7657959395.

The spelling of 8461800947 in words is "eight billion, four hundred sixty-one million, eight hundred thousand, nine hundred forty-seven".