983540563 has 2 divisors, whose sum is σ = 983540564. Its totient is φ = 983540562.

The previous prime is 983540527. The next prime is 983540609. The reversal of 983540563 is 365045389.

It is a weak prime.

It is an emirp because it is prime and its reverse (365045389) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 983540563 - 2¹⁷ = 983409491 is a prime.

It is not a weakly prime, because it can be changed into another prime (983540863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491770281 + 491770282.

It is an arithmetic number, because the mean of its divisors is an integer number (491770282).

Almost surely, 2^983540563 is an apocalyptic number.

983540563 is a deficient number, since it is larger than the sum of its proper divisors (1).

983540563 is an equidigital number, since it uses as much as digits as its factorization.

983540563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 983540563 is about 31361.4502693992. The cubic root of 983540563 is about 994.4831412393.

The spelling of 983540563 in words is "nine hundred eighty-three million, five hundred forty thousand, five hundred sixty-three".