197148899 has 2 divisors, whose sum is σ = 197148900. Its totient is φ = 197148898.

The previous prime is 197148877. The next prime is 197148929. The reversal of 197148899 is 998841791.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197148899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197118899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98574449 + 98574450.

It is an arithmetic number, because the mean of its divisors is an integer number (98574450).

Almost surely, 2^197148899 is an apocalyptic number.

197148899 is a deficient number, since it is larger than the sum of its proper divisors (1).

197148899 is an equidigital number, since it uses as much as digits as its factorization.

197148899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 56.

The square root of 197148899 is about 14040.9721529529. The cubic root of 197148899 is about 582.0113472672.

The spelling of 197148899 in words is "one hundred ninety-seven million, one hundred forty-eight thousand, eight hundred ninety-nine".