2166530593 has 2 divisors, whose sum is σ = 2166530594. Its totient is φ = 2166530592.

The previous prime is 2166530539. The next prime is 2166530623. The reversal of 2166530593 is 3950356612.

It is a happy number.

Together with previous prime (2166530539) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1395246609 + 771283984 = 37353^2 + 27772^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2166530593 is a prime.

It is not a weakly prime, because it can be changed into another prime (2166530503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083265296 + 1083265297.

It is an arithmetic number, because the mean of its divisors is an integer number (1083265297).

Almost surely, 2^2166530593 is an apocalyptic number.

It is an amenable number.

2166530593 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166530593 is an equidigital number, since it uses as much as digits as its factorization.

2166530593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 2166530593 is about 46546.0051239631. The cubic root of 2166530593 is about 1293.9622566384.

The spelling of 2166530593 in words is "two billion, one hundred sixty-six million, five hundred thirty thousand, five hundred ninety-three".