197469157 has 2 divisors, whose sum is σ = 197469158. Its totient is φ = 197469156.

The previous prime is 197469133. The next prime is 197469211. The reversal of 197469157 is 751964791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135280161 + 62188996 = 11631^2 + 7886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197469157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197469157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197469257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98734578 + 98734579.

It is an arithmetic number, because the mean of its divisors is an integer number (98734579).

Almost surely, 2^197469157 is an apocalyptic number.

It is an amenable number.

197469157 is a deficient number, since it is larger than the sum of its proper divisors (1).

197469157 is an equidigital number, since it uses as much as digits as its factorization.

197469157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 49.

The square root of 197469157 is about 14052.3719350151. The cubic root of 197469157 is about 582.3263256972.

The spelling of 197469157 in words is "one hundred ninety-seven million, four hundred sixty-nine thousand, one hundred fifty-seven".