197082187 has 2 divisors, whose sum is σ = 197082188. Its totient is φ = 197082186.

The previous prime is 197082181. The next prime is 197082199. The reversal of 197082187 is 781280791.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197082187 - 2¹¹ = 197080139 is a prime.

It is not a weakly prime, because it can be changed into another prime (197082181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98541093 + 98541094.

It is an arithmetic number, because the mean of its divisors is an integer number (98541094).

Almost surely, 2^197082187 is an apocalyptic number.

197082187 is a deficient number, since it is larger than the sum of its proper divisors (1).

197082187 is an equidigital number, since it uses as much as digits as its factorization.

197082187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 43.

The square root of 197082187 is about 14038.5963329672. The cubic root of 197082187 is about 581.9456921177.

The spelling of 197082187 in words is "one hundred ninety-seven million, eighty-two thousand, one hundred eighty-seven".