5581493491 has 8 divisors (see below), whose sum is σ = 6474056960. Its totient is φ = 4712731848.

The previous prime is 5581493453. The next prime is 5581493501. The reversal of 5581493491 is 1943941855.

It is a happy number.

5581493491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5581493491 - 2¹⁹ = 5580969203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5581490491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5949951 + ... + 5950888.

It is an arithmetic number, because the mean of its divisors is an integer number (809257120).

Almost surely, 2^5581493491 is an apocalyptic number.

5581493491 is a deficient number, since it is larger than the sum of its proper divisors (892563469).

5581493491 is a wasteful number, since it uses less digits than its factorization.

5581493491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11900913.

The product of its digits is 777600, while the sum is 49.

The square root of 5581493491 is about 74709.3935927739. The cubic root of 5581493491 is about 1773.8496537426.

The spelling of 5581493491 in words is "five billion, five hundred eighty-one million, four hundred ninety-three thousand, four hundred ninety-one".