194236564 has 12 divisors (see below), whose sum is σ = 354693024. Its totient is φ = 92895704.

The previous prime is 194236507. The next prime is 194236597. The reversal of 194236564 is 465632491.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055542 + ... + 1055725.

It is an arithmetic number, because the mean of its divisors is an integer number (29557752).

Almost surely, 2^194236564 is an apocalyptic number.

It is an amenable number.

194236564 is a deficient number, since it is larger than the sum of its proper divisors (160456460).

194236564 is a wasteful number, since it uses less digits than its factorization.

194236564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111294 (or 2111292 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 194236564 is about 13936.8778426160. The cubic root of 194236564 is about 579.1312439687.

The spelling of 194236564 in words is "one hundred ninety-four million, two hundred thirty-six thousand, five hundred sixty-four".