618943768 has 32 divisors (see below), whose sum is σ = 1201887360. Its totient is φ = 298506240.

The previous prime is 618943751. The next prime is 618943817. The reversal of 618943768 is 867349816.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74680 + ... + 82552.

It is an arithmetic number, because the mean of its divisors is an integer number (37558980).

Almost surely, 2^618943768 is an apocalyptic number.

It is an amenable number.

618943768 is a deficient number, since it is larger than the sum of its proper divisors (582943592).

618943768 is a wasteful number, since it uses less digits than its factorization.

618943768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8227 (or 8223 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 52.

The square root of 618943768 is about 24878.5805061302. The cubic root of 618943768 is about 852.2174021100.

The spelling of 618943768 in words is "six hundred eighteen million, nine hundred forty-three thousand, seven hundred sixty-eight".