618804198 has 80 divisors (see below), whose sum is σ = 1471979520. Its totient is φ = 193750704.

The previous prime is 618804149. The next prime is 618804223. The reversal of 618804198 is 891408816.

618804198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 390115 + ... + 391697.

It is an arithmetic number, because the mean of its divisors is an integer number (18399744).

Almost surely, 2^618804198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618804198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735989760).

618804198 is an abundant number, since it is smaller than the sum of its proper divisors (853175322).

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

618804198 is a wasteful number, since it uses less digits than its factorization.

618804198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743 (or 1734 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 618804198 is about 24875.7753246004. The cubic root of 618804198 is about 852.1533397882.

The spelling of 618804198 in words is "six hundred eighteen million, eight hundred four thousand, one hundred ninety-eight".