197738147 has 2 divisors, whose sum is σ = 197738148. Its totient is φ = 197738146.

The previous prime is 197738143. The next prime is 197738171. The reversal of 197738147 is 741837791.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197738147 - 2² = 197738143 is a prime.

It is not a weakly prime, because it can be changed into another prime (197738143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98869073 + 98869074.

It is an arithmetic number, because the mean of its divisors is an integer number (98869074).

Almost surely, 2^197738147 is an apocalyptic number.

197738147 is a deficient number, since it is larger than the sum of its proper divisors (1).

197738147 is an equidigital number, since it uses as much as digits as its factorization.

197738147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 47.

The square root of 197738147 is about 14061.9396599473. The cubic root of 197738147 is about 582.5906182584.

The spelling of 197738147 in words is "one hundred ninety-seven million, seven hundred thirty-eight thousand, one hundred forty-seven".