194503668 has 12 divisors (see below), whose sum is σ = 453841920. Its totient is φ = 64834552.

The previous prime is 194503651. The next prime is 194503711. The reversal of 194503668 is 866305491.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8104308 + ... + 8104331.

It is an arithmetic number, because the mean of its divisors is an integer number (37820160).

Almost surely, 2^194503668 is an apocalyptic number.

It is an amenable number.

194503668 is an abundant number, since it is smaller than the sum of its proper divisors (259338252).

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

194503668 is a wasteful number, since it uses less digits than its factorization.

194503668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16208646 (or 16208644 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 194503668 is about 13946.4571845326. The cubic root of 194503668 is about 579.3965860792.

The spelling of 194503668 in words is "one hundred ninety-four million, five hundred three thousand, six hundred sixty-eight".