2397972191 has 2 divisors, whose sum is σ = 2397972192. Its totient is φ = 2397972190.

The previous prime is 2397972151. The next prime is 2397972193. The reversal of 2397972191 is 1912797932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2397972191 - 2⁶ = 2397972127 is a prime.

Together with 2397972193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2397972193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1198986095 + 1198986096.

It is an arithmetic number, because the mean of its divisors is an integer number (1198986096).

Almost surely, 2^2397972191 is an apocalyptic number.

2397972191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2397972191 is an equidigital number, since it uses as much as digits as its factorization.

2397972191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 428652, while the sum is 50.

The square root of 2397972191 is about 48969.0942432061. The cubic root of 2397972191 is about 1338.4887155360.

The spelling of 2397972191 in words is "two billion, three hundred ninety-seven million, nine hundred seventy-two thousand, one hundred ninety-one".