618923568 has 160 divisors (see below), whose sum is σ = 1735335360. Its totient is φ = 189665280.

The previous prime is 618923563. The next prime is 618923579. The reversal of 618923568 is 865329816.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (618923561) 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, 3141646 + ... + 3141842.

It is an arithmetic number, because the mean of its divisors is an integer number (10845846).

Almost surely, 2^618923568 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 618923568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (867667680).

618923568 is an abundant number, since it is smaller than the sum of its proper divisors (1116411792).

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

618923568 is a wasteful number, since it uses less digits than its factorization.

618923568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 329 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 618923568 is about 24878.1745311026. The cubic root of 618923568 is about 852.2081309507.

The spelling of 618923568 in words is "six hundred eighteen million, nine hundred twenty-three thousand, five hundred sixty-eight".