2097840659 has 2 divisors, whose sum is σ = 2097840660. Its totient is φ = 2097840658.

The previous prime is 2097840637. The next prime is 2097840697. The reversal of 2097840659 is 9560487902.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2097840659 - 2²⁴ = 2081063443 is a prime.

It is not a weakly prime, because it can be changed into another prime (2097840259) 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, 1048920329 + 1048920330.

It is an arithmetic number, because the mean of its divisors is an integer number (1048920330).

Almost surely, 2^2097840659 is an apocalyptic number.

2097840659 is a deficient number, since it is larger than the sum of its proper divisors (1).

2097840659 is an equidigital number, since it uses as much as digits as its factorization.

2097840659 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 50.

The square root of 2097840659 is about 45802.1905480513. The cubic root of 2097840659 is about 1280.1400926989.

The spelling of 2097840659 in words is "two billion, ninety-seven million, eight hundred forty thousand, six hundred fifty-nine".