1973893 has 2 divisors, whose sum is σ = 1973894. Its totient is φ = 1973892.

The previous prime is 1973857. The next prime is 1973897. The reversal of 1973893 is 3983791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1481089 + 492804 = 1217^2 + 702^2 .

It is a cyclic number.

It is not a de Polignac number, because 1973893 - 2⁹ = 1973381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1973897) 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, 986946 + 986947.

It is an arithmetic number, because the mean of its divisors is an integer number (986947).

2^1973893 is an apocalyptic number.

It is an amenable number.

1973893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973893 is an equidigital number, since it uses as much as digits as its factorization.

1973893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 40.

The square root of 1973893 is about 1404.9530241257. The cubic root of 1973893 is about 125.4414895269.

The spelling of 1973893 in words is "one million, nine hundred seventy-three thousand, eight hundred ninety-three".