2026657649 has 2 divisors, whose sum is σ = 2026657650. Its totient is φ = 2026657648.

The previous prime is 2026657637. The next prime is 2026657679. The reversal of 2026657649 is 9467566202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1295496049 + 731161600 = 35993^2 + 27040^2 .

It is a cyclic number.

It is not a de Polignac number, because 2026657649 - 2⁸ = 2026657393 is a prime.

It is not a weakly prime, because it can be changed into another prime (2026657679) 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, 1013328824 + 1013328825.

It is an arithmetic number, because the mean of its divisors is an integer number (1013328825).

Almost surely, 2^2026657649 is an apocalyptic number.

It is an amenable number.

2026657649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2026657649 is an equidigital number, since it uses as much as digits as its factorization.

2026657649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The square root of 2026657649 is about 45018.4145544909. The cubic root of 2026657649 is about 1265.4941174569.

The spelling of 2026657649 in words is "two billion, twenty-six million, six hundred fifty-seven thousand, six hundred forty-nine".