616389894 has 48 divisors (see below), whose sum is σ = 1364688000. Its totient is φ = 200997888.

The previous prime is 616389847. The next prime is 616389899. The reversal of 616389894 is 498983616.

616389894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 616389894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616389899) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 427627 + ... + 429065.

It is an arithmetic number, because the mean of its divisors is an integer number (28431000).

Almost surely, 2^616389894 is an apocalyptic number.

616389894 is an abundant number, since it is smaller than the sum of its proper divisors (748298106).

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

616389894 is a wasteful number, since it uses less digits than its factorization.

616389894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949 (or 1946 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 616389894 is about 24827.2006879551. The cubic root of 616389894 is about 851.0436518477.

The spelling of 616389894 in words is "six hundred sixteen million, three hundred eighty-nine thousand, eight hundred ninety-four".