197964253 has 2 divisors, whose sum is σ = 197964254. Its totient is φ = 197964252.

The previous prime is 197964227. The next prime is 197964301. The reversal of 197964253 is 352469791.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162894169 + 35070084 = 12763^2 + 5922^2 .

It is a cyclic number.

It is not a de Polignac number, because 197964253 - 2⁹ = 197963741 is a prime.

It is a congruent number.

It is a weakly prime.

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, 98982126 + 98982127.

It is an arithmetic number, because the mean of its divisors is an integer number (98982127).

Almost surely, 2^197964253 is an apocalyptic number.

It is an amenable number.

197964253 is a deficient number, since it is larger than the sum of its proper divisors (1).

197964253 is an equidigital number, since it uses as much as digits as its factorization.

197964253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 197964253 is about 14069.9770077993. The cubic root of 197964253 is about 582.8125903629.

The spelling of 197964253 in words is "one hundred ninety-seven million, nine hundred sixty-four thousand, two hundred fifty-three".