5918981 has 12 divisors (see below), whose sum is σ = 6317472. Its totient is φ = 5543736.

The previous prime is 5918977. The next prime is 5918999. The reversal of 5918981 is 1898195.

5918981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5918981 - 2² = 5918977 is a prime.

It is a super-2 number, since 2×5918981² = 70068672156722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5918921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35360 + ... + 35526.

It is an arithmetic number, because the mean of its divisors is an integer number (526456).

Almost surely, 2^5918981 is an apocalyptic number.

It is an amenable number.

5918981 is a deficient number, since it is larger than the sum of its proper divisors (398491).

5918981 is a wasteful number, since it uses less digits than its factorization.

5918981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 257 counting only the distinct ones).

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

The square root of 5918981 is about 2432.8955998974. The cubic root of 5918981 is about 180.8904539456.

The spelling of 5918981 in words is "five million, nine hundred eighteen thousand, nine hundred eighty-one".