2628894731 has 2 divisors, whose sum is σ = 2628894732. Its totient is φ = 2628894730.

The previous prime is 2628894713. The next prime is 2628894743. The reversal of 2628894731 is 1374988262.

Together with previous prime (2628894713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2628894731 - 2¹⁴ = 2628878347 is a prime.

It is a super-2 number, since 2×2628894731² = 13822175013359124722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2628894731.

It is not a weakly prime, because it can be changed into another prime (2628894791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1314447365 + 1314447366.

It is an arithmetic number, because the mean of its divisors is an integer number (1314447366).

Almost surely, 2^2628894731 is an apocalyptic number.

2628894731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2628894731 is an equidigital number, since it uses as much as digits as its factorization.

2628894731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 50.

The square root of 2628894731 is about 51272.7484244798. The cubic root of 2628894731 is about 1380.1439902614.

The spelling of 2628894731 in words is "two billion, six hundred twenty-eight million, eight hundred ninety-four thousand, seven hundred thirty-one".