8491973607 has 32 divisors (see below), whose sum is σ = 13553971200. Its totient is φ = 5223699936.

The previous prime is 8491973593. The next prime is 8491973621. The reversal of 8491973607 is 7063791948.

It is a happy number.

8491973607 is a `hidden beast` number, since 8 + 491 + 97 + 3 + 60 + 7 = 666.

8491973607 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8491973593) and next prime (8491973621).

It is not a de Polignac number, because 8491973607 - 2⁴ = 8491973591 is a prime.

It is a super-2 number, since 2×8491973607² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8491973627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1605994 + ... + 1611272.

It is an arithmetic number, because the mean of its divisors is an integer number (423561600).

Almost surely, 2^8491973607 is an apocalyptic number.

8491973607 is a deficient number, since it is larger than the sum of its proper divisors (5061997593).

8491973607 is a wasteful number, since it uses less digits than its factorization.

8491973607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9884 (or 9878 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 8491973607 is about 92151.9050644098. The cubic root of 8491973607 is about 2040.1849767389.

The spelling of 8491973607 in words is "eight billion, four hundred ninety-one million, nine hundred seventy-three thousand, six hundred seven".