194985792 has 140 divisors (see below), whose sum is σ = 598390980. Its totient is φ = 62705664.

The previous prime is 194985773. The next prime is 194985793. The reversal of 194985792 is 297589491.

194985792 is a `hidden beast` number, since 19 + 498 + 57 + 92 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 164249856 + 30735936 = 12816^2 + 5544^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194985793) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 149688 + ... + 150984.

Almost surely, 2^194985792 is an apocalyptic number.

194985792 is a gapful number since it is divisible by the number (12) 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 194985792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299195490).

194985792 is an abundant number, since it is smaller than the sum of its proper divisors (403405188).

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

194985792 is a wasteful number, since it uses less digits than its factorization.

194985792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350 (or 1331 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 194985792 is about 13963.7313064954. The cubic root of 194985792 is about 579.8749155546.

The spelling of 194985792 in words is "one hundred ninety-four million, nine hundred eighty-five thousand, seven hundred ninety-two".