194109564 has 48 divisors (see below), whose sum is σ = 502217856. Its totient is φ = 57854400.

The previous prime is 194109563. The next prime is 194109589. The reversal of 194109564 is 465901491.

194109564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194109563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4002 + ... + 20105.

It is an arithmetic number, because the mean of its divisors is an integer number (10462872).

Almost surely, 2^194109564 is an apocalyptic number.

It is an amenable number.

194109564 is an abundant number, since it is smaller than the sum of its proper divisors (308108292).

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

194109564 is a wasteful number, since it uses less digits than its factorization.

194109564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24186 (or 24184 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 194109564 is about 13932.3208404056. The cubic root of 194109564 is about 579.0049963625.

The spelling of 194109564 in words is "one hundred ninety-four million, one hundred nine thousand, five hundred sixty-four".