1868616594 has 64 divisors (see below), whose sum is σ = 4479780480. Its totient is φ = 573946560.

The previous prime is 1868616559. The next prime is 1868616637. The reversal of 1868616594 is 4956168681.

1868616594 is a `hidden beast` number, since 18 + 6 + 8 + 616 + 5 + 9 + 4 = 666.

1868616594 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1868616594.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 462009 + ... + 466035.

It is an arithmetic number, because the mean of its divisors is an integer number (69996570).

Almost surely, 2^1868616594 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1868616594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2239890240).

1868616594 is an abundant number, since it is smaller than the sum of its proper divisors (2611163886).

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

1868616594 is a wasteful number, since it uses less digits than its factorization.

1868616594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4712 (or 4706 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 1868616594 is about 43227.4981233011. The cubic root of 1868616594 is about 1231.7050831898.

The spelling of 1868616594 in words is "one billion, eight hundred sixty-eight million, six hundred sixteen thousand, five hundred ninety-four".