983540543 has 4 divisors (see below), whose sum is σ = 983603280. Its totient is φ = 983477808.

The previous prime is 983540527. The next prime is 983540563. The reversal of 983540543 is 345045389.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 983540543 - 2⁴ = 983540527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 983540543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (983540563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14723 + ... + 46731.

It is an arithmetic number, because the mean of its divisors is an integer number (245900820).

Almost surely, 2^983540543 is an apocalyptic number.

983540543 is a deficient number, since it is larger than the sum of its proper divisors (62737).

983540543 is a wasteful number, since it uses less digits than its factorization.

983540543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62736.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 983540543 is about 31361.4499505364. The cubic root of 983540543 is about 994.4831344985.

The spelling of 983540543 in words is "nine hundred eighty-three million, five hundred forty thousand, five hundred forty-three".