194957568 has 216 divisors, whose sum is σ = 633901632. Its totient is φ = 57176064.

The previous prime is 194957549. The next prime is 194957597. The reversal of 194957568 is 865759491.

194957568 is a `hidden beast` number, since 1 + 9 + 4 + 9 + 575 + 68 = 666.

Its product of digits (2721600) is a multiple of the sum of its prime divisors (324).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 688755 + ... + 689037.

Almost surely, 2^194957568 is an apocalyptic number.

194957568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194957568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316950816).

194957568 is an abundant number, since it is smaller than the sum of its proper divisors (438944064).

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

194957568 is a wasteful number, since it uses less digits than its factorization.

194957568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 324 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The square root of 194957568 is about 13962.7206517928. The cubic root of 194957568 is about 579.8469354316.

The spelling of 194957568 in words is "one hundred ninety-four million, nine hundred fifty-seven thousand, five hundred sixty-eight".