618888912 has 80 divisors (see below), whose sum is σ = 1625699520. Its totient is φ = 202853376.

The previous prime is 618888911. The next prime is 618888947. The reversal of 618888912 is 219888816.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618888911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1183083 + ... + 1183605.

It is an arithmetic number, because the mean of its divisors is an integer number (20321244).

Almost surely, 2^618888912 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 618888912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (812849760).

618888912 is an abundant number, since it is smaller than the sum of its proper divisors (1006810608).

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

618888912 is a wasteful number, since it uses less digits than its factorization.

618888912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 894 counting only the distinct ones).

The product of its digits is 442368, while the sum is 51.

The square root of 618888912 is about 24877.4780072257. The cubic root of 618888912 is about 852.1922244760.

The spelling of 618888912 in words is "six hundred eighteen million, eight hundred eighty-eight thousand, nine hundred twelve".