194974164 has 144 divisors (see below), whose sum is σ = 631403136. Its totient is φ = 49248000.

The previous prime is 194974141. The next prime is 194974177. The reversal of 194974164 is 461479491.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101614 + ... + 103514.

It is an arithmetic number, because the mean of its divisors is an integer number (4384744).

Almost surely, 2^194974164 is an apocalyptic number.

194974164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194974164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315701568).

194974164 is an abundant number, since it is smaller than the sum of its proper divisors (436428972).

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

194974164 is a wasteful number, since it uses less digits than its factorization.

194974164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966 (or 1961 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 194974164 is about 13963.3149359312. The cubic root of 194974164 is about 579.8633883565.

The spelling of 194974164 in words is "one hundred ninety-four million, nine hundred seventy-four thousand, one hundred sixty-four".