197269157 has 2 divisors, whose sum is σ = 197269158. Its totient is φ = 197269156.

The previous prime is 197269147. The next prime is 197269187. The reversal of 197269157 is 751962791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185804161 + 11464996 = 13631^2 + 3386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197269157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197269117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98634578 + 98634579.

It is an arithmetic number, because the mean of its divisors is an integer number (98634579).

Almost surely, 2^197269157 is an apocalyptic number.

It is an amenable number.

197269157 is a deficient number, since it is larger than the sum of its proper divisors (1).

197269157 is an equidigital number, since it uses as much as digits as its factorization.

197269157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 47.

The square root of 197269157 is about 14045.2538958895. The cubic root of 197269157 is about 582.1296627375.

The spelling of 197269157 in words is "one hundred ninety-seven million, two hundred sixty-nine thousand, one hundred fifty-seven".