8183497661 has 2 divisors, whose sum is σ = 8183497662. Its totient is φ = 8183497660.

The previous prime is 8183497627. The next prime is 8183497667. The reversal of 8183497661 is 1667943818.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5444964100 + 2738533561 = 73790^2 + 52331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8183497661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8183497667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4091748830 + 4091748831.

It is an arithmetic number, because the mean of its divisors is an integer number (4091748831).

Almost surely, 2^8183497661 is an apocalyptic number.

It is an amenable number.

8183497661 is a deficient number, since it is larger than the sum of its proper divisors (1).

8183497661 is an equidigital number, since it uses as much as digits as its factorization.

8183497661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 53.

The square root of 8183497661 is about 90462.6865674461. The cubic root of 8183497661 is about 2015.1760246203.

The spelling of 8183497661 in words is "eight billion, one hundred eighty-three million, four hundred ninety-seven thousand, six hundred sixty-one".