2815558673 has 2 divisors, whose sum is σ = 2815558674. Its totient is φ = 2815558672.

The previous prime is 2815558661. The next prime is 2815558679. The reversal of 2815558673 is 3768555182.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2774444929 + 41113744 = 52673^2 + 6412^2 .

It is a cyclic number.

It is not a de Polignac number, because 2815558673 - 2⁶ = 2815558609 is a prime.

It is a super-2 number, since 2×2815558673² = 15854741282211041858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2815558679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1407779336 + 1407779337.

It is an arithmetic number, because the mean of its divisors is an integer number (1407779337).

Almost surely, 2^2815558673 is an apocalyptic number.

It is an amenable number.

2815558673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2815558673 is an equidigital number, since it uses as much as digits as its factorization.

2815558673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016000, while the sum is 50.

The square root of 2815558673 is about 53061.8381984643. The cubic root of 2815558673 is about 1412.0655595358.

The spelling of 2815558673 in words is "two billion, eight hundred fifteen million, five hundred fifty-eight thousand, six hundred seventy-three".