2660242369 has 2 divisors, whose sum is σ = 2660242370. Its totient is φ = 2660242368.

The previous prime is 2660242367. The next prime is 2660242373. The reversal of 2660242369 is 9632420662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2145542400 + 514699969 = 46320^2 + 22687^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660242369 - 2¹ = 2660242367 is a prime.

It is a super-2 number, since 2×2660242369² = 14153778923645464322, which contains 22 as substring.

Together with 2660242367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2660242367) 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, 1330121184 + 1330121185.

It is an arithmetic number, because the mean of its divisors is an integer number (1330121185).

Almost surely, 2^2660242369 is an apocalyptic number.

It is an amenable number.

2660242369 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660242369 is an equidigital number, since it uses as much as digits as its factorization.

2660242369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 2660242369 is about 51577.5374460627. The cubic root of 2660242369 is about 1385.6080634442.

The spelling of 2660242369 in words is "two billion, six hundred sixty million, two hundred forty-two thousand, three hundred sixty-nine".