618228784368 has 960 divisors, whose sum is σ = 2120770928640. Its totient is φ = 172691398656.

The previous prime is 618228784339. The next prime is 618228784391. The reversal of 618228784368 is 863487822816.

618228784368 is a `hidden beast` number, since 6 + 182 + 28 + 78 + 4 + 368 = 666.

It is a super-2 number, since 2×618228784368² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4512618796 + ... + 4512618932.

It is an arithmetic number, because the mean of its divisors is an integer number (2209136384).

Almost surely, 2^618228784368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618228784368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1060385464320).

618228784368 is an abundant number, since it is smaller than the sum of its proper divisors (1502542144272).

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

618228784368 is a wasteful number, since it uses less digits than its factorization.

618228784368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 338 counting only the distinct ones).

The product of its digits is 49545216, while the sum is 63.

The spelling of 618228784368 in words is "six hundred eighteen billion, two hundred twenty-eight million, seven hundred eighty-four thousand, three hundred sixty-eight".