2197252649 has 2 divisors, whose sum is σ = 2197252650. Its totient is φ = 2197252648.

The previous prime is 2197252639. The next prime is 2197252693. The reversal of 2197252649 is 9462527912.

It is a happy number.

2197252649 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., 2182291225 + 14961424 = 46715^2 + 3868^2 .

It is a cyclic number.

It is not a de Polignac number, because 2197252649 - 2¹² = 2197248553 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 (2197252619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098626324 + 1098626325.

It is an arithmetic number, because the mean of its divisors is an integer number (1098626325).

Almost surely, 2^2197252649 is an apocalyptic number.

It is an amenable number.

2197252649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2197252649 is an equidigital number, since it uses as much as digits as its factorization.

2197252649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 47.

The square root of 2197252649 is about 46874.8615891290. The cubic root of 2197252649 is about 1300.0498302398.

The spelling of 2197252649 in words is "two billion, one hundred ninety-seven million, two hundred fifty-two thousand, six hundred forty-nine".