1623272993 has 2 divisors, whose sum is σ = 1623272994. Its totient is φ = 1623272992.

The previous prime is 1623272983. The next prime is 1623273011. The reversal of 1623272993 is 3992723261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1537580944 + 85692049 = 39212^2 + 9257^2 .

It is a cyclic number.

It is not a de Polignac number, because 1623272993 - 2⁸ = 1623272737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1623272953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811636496 + 811636497.

It is an arithmetic number, because the mean of its divisors is an integer number (811636497).

Almost surely, 2^1623272993 is an apocalyptic number.

It is an amenable number.

1623272993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623272993 is an equidigital number, since it uses as much as digits as its factorization.

1623272993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 44.

The square root of 1623272993 is about 40289.8621615910. The cubic root of 1623272993 is about 1175.2507068475.

The spelling of 1623272993 in words is "one billion, six hundred twenty-three million, two hundred seventy-two thousand, nine hundred ninety-three".