618393819400 has 192 divisors, whose sum is σ = 1718347161600. Its totient is φ = 202359548160.

The previous prime is 618393819397. The next prime is 618393819467. The reversal of 618393819400 is 4918393816.

It is a happy number.

618393819400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14887861 + ... + 14929339.

It is an arithmetic number, because the mean of its divisors is an integer number (8949724800).

Almost surely, 2^618393819400 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 618393819400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (859173580800).

618393819400 is an abundant number, since it is smaller than the sum of its proper divisors (1099953342200).

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

618393819400 is a wasteful number, since it uses less digits than its factorization.

618393819400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41988 (or 41979 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 618393819400 in words is "six hundred eighteen billion, three hundred ninety-three million, eight hundred nineteen thousand, four hundred".