5918891 has 8 divisors (see below), whose sum is σ = 6563568. Its totient is φ = 5292000.

The previous prime is 5918879. The next prime is 5918909. The reversal of 5918891 is 1988195.

5918891 = 281² + 282² + ... + 341².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5918891 - 2²² = 1724587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5918191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3740 + ... + 5081.

It is an arithmetic number, because the mean of its divisors is an integer number (820446).

Almost surely, 2^5918891 is an apocalyptic number.

5918891 is a deficient number, since it is larger than the sum of its proper divisors (644677).

5918891 is a wasteful number, since it uses less digits than its factorization.

5918891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8893.

The product of its digits is 25920, while the sum is 41.

The square root of 5918891 is about 2432.8771033490. The cubic root of 5918891 is about 180.8895371085.

The spelling of 5918891 in words is "five million, nine hundred eighteen thousand, eight hundred ninety-one".