2623668493 has 2 divisors, whose sum is σ = 2623668494. Its totient is φ = 2623668492.

The previous prime is 2623668419. The next prime is 2623668511. The reversal of 2623668493 is 3948663262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2598246729 + 25421764 = 50973^2 + 5042^2 .

It is a cyclic number.

It is not a de Polignac number, because 2623668493 - 2²⁵ = 2590114061 is a prime.

It is a super-2 number, since 2×2623668493² = 13767272722321782098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2623668403) 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, 1311834246 + 1311834247.

It is an arithmetic number, because the mean of its divisors is an integer number (1311834247).

Almost surely, 2^2623668493 is an apocalyptic number.

It is an amenable number.

2623668493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2623668493 is an equidigital number, since it uses as much as digits as its factorization.

2623668493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 49.

The square root of 2623668493 is about 51221.7580038015. The cubic root of 2623668493 is about 1379.2288089430.

The spelling of 2623668493 in words is "two billion, six hundred twenty-three million, six hundred sixty-eight thousand, four hundred ninety-three".