618607218 has 64 divisors (see below), whose sum is σ = 1340640000. Its totient is φ = 189775872.

The previous prime is 618607189. The next prime is 618607219. The reversal of 618607218 is 812706816.

It is not an unprimeable number, because it can be changed into a prime (618607219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 494658 + ... + 495906.

It is an arithmetic number, because the mean of its divisors is an integer number (20947500).

Almost surely, 2^618607218 is an apocalyptic number.

618607218 is an abundant number, since it is smaller than the sum of its proper divisors (722032782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618607218 is a wasteful number, since it uses less digits than its factorization.

618607218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 618607218 is about 24871.8157358887. The cubic root of 618607218 is about 852.0629100101.

The spelling of 618607218 in words is "six hundred eighteen million, six hundred seven thousand, two hundred eighteen".