5818898644 has 12 divisors (see below), whose sum is σ = 10966386004. Its totient is φ = 2685645504.

The previous prime is 5818898629. The next prime is 5818898651. The reversal of 5818898644 is 4468988185.

It can be written as a sum of positive squares in 2 ways, for example, as 595945744 + 5222952900 = 24412^2 + 72270^2 .

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 3 ways as a sum of consecutive naturals, for example, 55950897 + ... + 55951000.

Almost surely, 2^5818898644 is an apocalyptic number.

It is an amenable number.

5818898644 is a deficient number, since it is larger than the sum of its proper divisors (5147487360).

5818898644 is a wasteful number, since it uses less digits than its factorization.

5818898644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111901914 (or 111901912 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 61.

The square root of 5818898644 is about 76281.7058278064. The cubic root of 5818898644 is about 1798.6511132901.

The spelling of 5818898644 in words is "five billion, eight hundred eighteen million, eight hundred ninety-eight thousand, six hundred forty-four".