194451894 has 96 divisors (see below), whose sum is σ = 541427040. Its totient is φ = 51274944.

The previous prime is 194451893. The next prime is 194451919. The reversal of 194451894 is 498154491.

It is a happy number.

194451894 is a `hidden beast` number, since 1 + 9 + 44 + 518 + 94 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194451893) 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, 31572 + ... + 37224.

It is an arithmetic number, because the mean of its divisors is an integer number (5639865).

Almost surely, 2^194451894 is an apocalyptic number.

194451894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 194451894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270713520).

194451894 is an abundant number, since it is smaller than the sum of its proper divisors (346975146).

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

194451894 is a wasteful number, since it uses less digits than its factorization.

194451894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691 (or 5678 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 194451894 is about 13944.6008906673. The cubic root of 194451894 is about 579.3451725829.

It can be divided in two parts, 1944 and 51894, that multiplied together give a square (100881936 = 10044²).

The spelling of 194451894 in words is "one hundred ninety-four million, four hundred fifty-one thousand, eight hundred ninety-four".