194120064 has 144 divisors (see below), whose sum is σ = 586715220. Its totient is φ = 63887616.

The previous prime is 194120063. The next prime is 194120077. The reversal of 194120064 is 460021491.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194120063) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2457177 + ... + 2457255.

Almost surely, 2^194120064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194120064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293357610).

194120064 is an abundant number, since it is smaller than the sum of its proper divisors (392595156).

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

194120064 is an frugal number, since it uses more digits than its factorization.

194120064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 194120064 is about 13932.6976569507. The cubic root of 194120064 is about 579.0154362445.

The spelling of 194120064 in words is "one hundred ninety-four million, one hundred twenty thousand, sixty-four".