2397972761 has 2 divisors, whose sum is σ = 2397972762. Its totient is φ = 2397972760.

The previous prime is 2397972751. The next prime is 2397972779. The reversal of 2397972761 is 1672797932.

2397972761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2279489536 + 118483225 = 47744^2 + 10885^2 .

It is a cyclic number.

It is not a de Polignac number, because 2397972761 - 2¹⁴ = 2397956377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2397972751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1198986380 + 1198986381.

It is an arithmetic number, because the mean of its divisors is an integer number (1198986381).

Almost surely, 2^2397972761 is an apocalyptic number.

It is an amenable number.

2397972761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2397972761 is an equidigital number, since it uses as much as digits as its factorization.

2397972761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2000376, while the sum is 53.

The square root of 2397972761 is about 48969.1000632031. The cubic root of 2397972761 is about 1338.4888215893.

The spelling of 2397972761 in words is "two billion, three hundred ninety-seven million, nine hundred seventy-two thousand, seven hundred sixty-one".