5581877918 has 16 divisors (see below), whose sum is σ = 8728490880. Its totient is φ = 2674164000.

The previous prime is 5581877759. The next prime is 5581877927. The reversal of 5581877918 is 8197781855.

It is a super-2 number, since 2×5581877918² = 62314722182912029448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439433 + ... + 451956.

It is an arithmetic number, because the mean of its divisors is an integer number (545530680).

Almost surely, 2^5581877918 is an apocalyptic number.

5581877918 is a deficient number, since it is larger than the sum of its proper divisors (3146612962).

5581877918 is a wasteful number, since it uses less digits than its factorization.

5581877918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891523.

The product of its digits is 5644800, while the sum is 59.

The square root of 5581877918 is about 74711.9663641642. The cubic root of 5581877918 is about 1773.8903776126.

The spelling of 5581877918 in words is "five billion, five hundred eighty-one million, eight hundred seventy-seven thousand, nine hundred eighteen".