973690243 has 2 divisors, whose sum is σ = 973690244. Its totient is φ = 973690242.

The previous prime is 973690241. The next prime is 973690301. The reversal of 973690243 is 342096379.

It is a weak prime.

It is an emirp because it is prime and its reverse (342096379) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 973690243 - 2¹ = 973690241 is a prime.

Together with 973690241, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 973690243.

It is not a weakly prime, because it can be changed into another prime (973690241) 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, 486845121 + 486845122.

It is an arithmetic number, because the mean of its divisors is an integer number (486845122).

Almost surely, 2^973690243 is an apocalyptic number.

973690243 is a deficient number, since it is larger than the sum of its proper divisors (1).

973690243 is an equidigital number, since it uses as much as digits as its factorization.

973690243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 43.

The square root of 973690243 is about 31204.0100467873. The cubic root of 973690243 is about 991.1520252354.

The spelling of 973690243 in words is "nine hundred seventy-three million, six hundred ninety thousand, two hundred forty-three".