194568894 has 96 divisors (see below), whose sum is σ = 473657184. Its totient is φ = 57335040.

The previous prime is 194568887. The next prime is 194568901. The reversal of 194568894 is 498865491.

It is an interprime number because it is at equal distance from previous prime (194568887) and next prime (194568901).

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 194568894.

It is a congruent number.

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, 613624 + ... + 613940.

It is an arithmetic number, because the mean of its divisors is an integer number (4933929).

Almost surely, 2^194568894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194568894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236828592).

194568894 is an abundant number, since it is smaller than the sum of its proper divisors (279088290).

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

194568894 is a wasteful number, since it uses less digits than its factorization.

194568894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 439 counting only the distinct ones).

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

The square root of 194568894 is about 13948.7954318644. The cubic root of 194568894 is about 579.4613449232.

The spelling of 194568894 in words is "one hundred ninety-four million, five hundred sixty-eight thousand, eight hundred ninety-four".