1973143 has 2 divisors, whose sum is σ = 1973144. Its totient is φ = 1973142.

The previous prime is 1973129. The next prime is 1973149. The reversal of 1973143 is 3413791.

It is a strong prime.

It is an emirp because it is prime and its reverse (3413791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1973143 - 2¹³ = 1964951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1973149) 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, 986571 + 986572.

It is an arithmetic number, because the mean of its divisors is an integer number (986572).

2^1973143 is an apocalyptic number.

1973143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973143 is an equidigital number, since it uses as much as digits as its factorization.

1973143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 28.

The square root of 1973143 is about 1404.6860859281. The cubic root of 1973143 is about 125.4255999396.

It can be divided in two parts, 1973 and 143, that added together give a square (2116 = 46²).

The spelling of 1973143 in words is "one million, nine hundred seventy-three thousand, one hundred forty-three".