2197697237 has 2 divisors, whose sum is σ = 2197697238. Its totient is φ = 2197697236.

The previous prime is 2197697233. The next prime is 2197697239. The reversal of 2197697237 is 7327967912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1443316081 + 754381156 = 37991^2 + 27466^2 .

It is a cyclic number.

It is not a de Polignac number, because 2197697237 - 2² = 2197697233 is a prime.

Together with 2197697239, 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 (2197697233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098848618 + 1098848619.

It is an arithmetic number, because the mean of its divisors is an integer number (1098848619).

Almost surely, 2^2197697237 is an apocalyptic number.

It is an amenable number.

2197697237 is a deficient number, since it is larger than the sum of its proper divisors (1).

2197697237 is an equidigital number, since it uses as much as digits as its factorization.

2197697237 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2197697237 is about 46879.6036352698. The cubic root of 2197697237 is about 1300.1375075454.

The spelling of 2197697237 in words is "two billion, one hundred ninety-seven million, six hundred ninety-seven thousand, two hundred thirty-seven".