1973197 has 2 divisors, whose sum is σ = 1973198. Its totient is φ = 1973196.

The previous prime is 1973177. The next prime is 1973203. The reversal of 1973197 is 7913791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1285956 + 687241 = 1134^2 + 829^2 .

It is a cyclic number.

It is not a de Polignac number, because 1973197 - 2¹¹ = 1971149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1973177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986598 + 986599.

It is an arithmetic number, because the mean of its divisors is an integer number (986599).

2^1973197 is an apocalyptic number.

It is an amenable number.

1973197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973197 is an equidigital number, since it uses as much as digits as its factorization.

1973197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11907, while the sum is 37.

The square root of 1973197 is about 1404.7053071730. The cubic root of 1973197 is about 125.4267441244.

The spelling of 1973197 in words is "one million, nine hundred seventy-three thousand, one hundred ninety-seven".