197653249 has 2 divisors, whose sum is σ = 197653250. Its totient is φ = 197653248.

The previous prime is 197653243. The next prime is 197653273. The reversal of 197653249 is 942356791.

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., 197543025 + 110224 = 14055^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 197653249 - 2⁵ = 197653217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197653199 and 197653208.

It is not a weakly prime, because it can be changed into another prime (197653243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98826624 + 98826625.

It is an arithmetic number, because the mean of its divisors is an integer number (98826625).

Almost surely, 2^197653249 is an apocalyptic number.

It is an amenable number.

197653249 is a deficient number, since it is larger than the sum of its proper divisors (1).

197653249 is an equidigital number, since it uses as much as digits as its factorization.

197653249 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 197653249 is about 14058.9206200192. The cubic root of 197653249 is about 582.5072287535.

It can be divided in two parts, 1976 and 53249, that added together give a square (55225 = 235²).

The spelling of 197653249 in words is "one hundred ninety-seven million, six hundred fifty-three thousand, two hundred forty-nine".