197284873 has 2 divisors, whose sum is σ = 197284874. Its totient is φ = 197284872.

The previous prime is 197284807. The next prime is 197284891. The reversal of 197284873 is 378482791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132434064 + 64850809 = 11508^2 + 8053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197284873 is a prime.

It is a super-2 number, since 2×197284873² = 77842642229252258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (197284573) 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, 98642436 + 98642437.

It is an arithmetic number, because the mean of its divisors is an integer number (98642437).

Almost surely, 2^197284873 is an apocalyptic number.

It is an amenable number.

197284873 is a deficient number, since it is larger than the sum of its proper divisors (1).

197284873 is an equidigital number, since it uses as much as digits as its factorization.

197284873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 49.

The square root of 197284873 is about 14045.8133619951. The cubic root of 197284873 is about 582.1451213238.

The spelling of 197284873 in words is "one hundred ninety-seven million, two hundred eighty-four thousand, eight hundred seventy-three".