618441894 has 96 divisors (see below), whose sum is σ = 1625495040. Its totient is φ = 166104576.

The previous prime is 618441893. The next prime is 618441899. The reversal of 618441894 is 498144816.

618441894 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 not an unprimeable number, because it can be changed into a prime (618441893) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 169174 + ... + 172790.

It is an arithmetic number, because the mean of its divisors is an integer number (16932240).

Almost surely, 2^618441894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618441894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (812747520).

618441894 is an abundant number, since it is smaller than the sum of its proper divisors (1007053146).

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

618441894 is a wasteful number, since it uses less digits than its factorization.

618441894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714 (or 3711 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 618441894 is about 24868.4919928813. The cubic root of 618441894 is about 851.9869980824.

The spelling of 618441894 in words is "six hundred eighteen million, four hundred forty-one thousand, eight hundred ninety-four".