194481920 has 36 divisors (see below), whose sum is σ = 465848040. Its totient is φ = 77792256.

The previous prime is 194481907. The next prime is 194481943. The reversal of 194481920 is 29184491.

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, 74690 + ... + 77249.

Almost surely, 2^194481920 is an apocalyptic number.

194481920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194481920 is an abundant number, since it is smaller than the sum of its proper divisors (271366120).

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

194481920 is an equidigital number, since it uses as much as digits as its factorization.

194481920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151960 (or 151946 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 194481920 is about 13945.6774665127. The cubic root of 194481920 is about 579.3749906225.

The spelling of 194481920 in words is "one hundred ninety-four million, four hundred eighty-one thousand, nine hundred twenty".