8491973683 has 2 divisors, whose sum is σ = 8491973684. Its totient is φ = 8491973682.

The previous prime is 8491973653. The next prime is 8491973717. The reversal of 8491973683 is 3863791948.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8491973683 - 2²¹ = 8489876531 is a prime.

It is a super-2 number, since 2×8491973683² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8491973653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4245986841 + 4245986842.

It is an arithmetic number, because the mean of its divisors is an integer number (4245986842).

Almost surely, 2^8491973683 is an apocalyptic number.

8491973683 is a deficient number, since it is larger than the sum of its proper divisors (1).

8491973683 is an equidigital number, since it uses as much as digits as its factorization.

8491973683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 58.

The square root of 8491973683 is about 92151.9054767724. The cubic root of 8491973683 is about 2040.1849828252.

The spelling of 8491973683 in words is "eight billion, four hundred ninety-one million, nine hundred seventy-three thousand, six hundred eighty-three".