543401863 has 4 divisors (see below), whose sum is σ = 543470200. Its totient is φ = 543333528.

The previous prime is 543401861. The next prime is 543401891. The reversal of 543401863 is 368104345.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 543401863 - 2¹ = 543401861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543401861) 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, 20388 + ... + 38761.

It is an arithmetic number, because the mean of its divisors is an integer number (135867550).

Almost surely, 2^543401863 is an apocalyptic number.

543401863 is a deficient number, since it is larger than the sum of its proper divisors (68337).

543401863 is an equidigital number, since it uses as much as digits as its factorization.

543401863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68336.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 543401863 is about 23310.9815966638. The cubic root of 543401863 is about 816.0317208409.

The spelling of 543401863 in words is "five hundred forty-three million, four hundred one thousand, eight hundred sixty-three".