2657897393 has 2 divisors, whose sum is σ = 2657897394. Its totient is φ = 2657897392.

The previous prime is 2657897339. The next prime is 2657897413. The reversal of 2657897393 is 3937987562.

Together with previous prime (2657897339) 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., 1589457424 + 1068439969 = 39868^2 + 32687^2 .

It is a cyclic number.

It is not a de Polignac number, because 2657897393 - 2²⁴ = 2641120177 is a prime.

It is not a weakly prime, because it can be changed into another prime (2657891393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328948696 + 1328948697.

It is an arithmetic number, because the mean of its divisors is an integer number (1328948697).

Almost surely, 2^2657897393 is an apocalyptic number.

It is an amenable number.

2657897393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2657897393 is an equidigital number, since it uses as much as digits as its factorization.

2657897393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17146080, while the sum is 59.

The square root of 2657897393 is about 51554.7999026279. The cubic root of 2657897393 is about 1385.2008107220.

The spelling of 2657897393 in words is "two billion, six hundred fifty-seven million, eight hundred ninety-seven thousand, three hundred ninety-three".