618394880 has 72 divisors (see below), whose sum is σ = 1490076000. Its totient is φ = 245884928.

The previous prime is 618394879. The next prime is 618394891. The reversal of 618394880 is 88493816.

It is a super-2 number, since 2×618394880² = 764824455220428800, which 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 7 ways as a sum of consecutive naturals, for example, 227771 + ... + 230469.

It is an arithmetic number, because the mean of its divisors is an integer number (20695500).

Almost surely, 2^618394880 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 618394880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745038000).

618394880 is an abundant number, since it is smaller than the sum of its proper divisors (871681120).

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

618394880 is a wasteful number, since it uses less digits than its factorization.

618394880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899 (or 2885 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 618394880 is about 24867.5467225860. The cubic root of 618394880 is about 851.9654081630.

The spelling of 618394880 in words is "six hundred eighteen million, three hundred ninety-four thousand, eight hundred eighty".