618916868 has 48 divisors (see below), whose sum is σ = 1172613120. Its totient is φ = 284904864.

The previous prime is 618916819. The next prime is 618916873. The reversal of 618916868 is 868619816.

It is a happy number.

It is a super-3 number, since 3×618916868³ (a number of 27 digits) contains 333 as substring.

Its product of digits (995328) is a multiple of the sum of its prime factors (1296).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581705 + ... + 582767.

It is an arithmetic number, because the mean of its divisors is an integer number (24429440).

Almost surely, 2^618916868 is an apocalyptic number.

It is an amenable number.

618916868 is a deficient number, since it is larger than the sum of its proper divisors (553696252).

618916868 is a wasteful number, since it uses less digits than its factorization.

618916868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296 (or 1294 counting only the distinct ones).

The product of its digits is 995328, while the sum is 53.

The square root of 618916868 is about 24878.0398745560. The cubic root of 618916868 is about 852.2050558187.

The spelling of 618916868 in words is "six hundred eighteen million, nine hundred sixteen thousand, eight hundred sixty-eight".