5978546891 has 2 divisors, whose sum is σ = 5978546892. Its totient is φ = 5978546890.

The previous prime is 5978546887. The next prime is 5978546909. The reversal of 5978546891 is 1986458795.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5978546891 - 2² = 5978546887 is a prime.

It is not a weakly prime, because it can be changed into another prime (5978542891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2989273445 + 2989273446.

It is an arithmetic number, because the mean of its divisors is an integer number (2989273446).

Almost surely, 2^5978546891 is an apocalyptic number.

5978546891 is a deficient number, since it is larger than the sum of its proper divisors (1).

5978546891 is an equidigital number, since it uses as much as digits as its factorization.

5978546891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 62.

The square root of 5978546891 is about 77321.0636954769. The cubic root of 5978546891 is about 1814.9522906102.

The spelling of 5978546891 in words is "five billion, nine hundred seventy-eight million, five hundred forty-six thousand, eight hundred ninety-one".