194263668 has 36 divisors (see below), whose sum is σ = 497978208. Its totient is φ = 63841680.

The previous prime is 194263631. The next prime is 194263697. The reversal of 194263668 is 866362491.

194263668 is a `hidden beast` number, since 1 + 9 + 4 + 2 + 636 + 6 + 8 = 666.

194263668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35446 + ... + 40557.

It is an arithmetic number, because the mean of its divisors is an integer number (13832728).

Almost surely, 2^194263668 is an apocalyptic number.

194263668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

194263668 is an abundant number, since it is smaller than the sum of its proper divisors (303714540).

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

194263668 is a wasteful number, since it uses less digits than its factorization.

194263668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76084 (or 76079 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 194263668 is about 13937.8501929100. The cubic root of 194263668 is about 579.1581802689.

The spelling of 194263668 in words is "one hundred ninety-four million, two hundred sixty-three thousand, six hundred sixty-eight".