2397277681 has 2 divisors, whose sum is σ = 2397277682. Its totient is φ = 2397277680.

The previous prime is 2397277643. The next prime is 2397277769. The reversal of 2397277681 is 1867727932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1809651600 + 587626081 = 42540^2 + 24241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2397277681 is a prime.

It is a super-4 number, since 4×2397277681⁴ (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2397277381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1198638840 + 1198638841.

It is an arithmetic number, because the mean of its divisors is an integer number (1198638841).

Almost surely, 2^2397277681 is an apocalyptic number.

It is an amenable number.

2397277681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2397277681 is an equidigital number, since it uses as much as digits as its factorization.

2397277681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1778112, while the sum is 52.

The square root of 2397277681 is about 48962.0024202442. The cubic root of 2397277681 is about 1338.3594836291.

The spelling of 2397277681 in words is "two billion, three hundred ninety-seven million, two hundred seventy-seven thousand, six hundred eighty-one".