618384244 has 12 divisors (see below), whose sum is σ = 1092286944. Its totient is φ = 306302264.

The previous prime is 618384191. The next prime is 618384281. The reversal of 618384244 is 442483816.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 618384197 and 618384206.

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, 721984 + ... + 722839.

It is an arithmetic number, because the mean of its divisors is an integer number (91023912).

Almost surely, 2^618384244 is an apocalyptic number.

It is an amenable number.

618384244 is a deficient number, since it is larger than the sum of its proper divisors (473902700).

618384244 is a wasteful number, since it uses less digits than its factorization.

618384244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444934 (or 1444932 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The square root of 618384244 is about 24867.3328686452. The cubic root of 618384244 is about 851.9605237134.

The spelling of 618384244 in words is "six hundred eighteen million, three hundred eighty-four thousand, two hundred forty-four".