194445740 has 12 divisors (see below), whose sum is σ = 408336096. Its totient is φ = 77778288.

The previous prime is 194445707. The next prime is 194445743. The reversal of 194445740 is 47544491.

It is a junction number, because it is equal to n+sod(n) for n = 194445694 and 194445703.

It is not an unprimeable number, because it can be changed into a prime (194445743) by changing a digit.

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, 4861124 + ... + 4861163.

It is an arithmetic number, because the mean of its divisors is an integer number (34028008).

Almost surely, 2^194445740 is an apocalyptic number.

194445740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194445740 is an abundant number, since it is smaller than the sum of its proper divisors (213890356).

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

194445740 is a wasteful number, since it uses less digits than its factorization.

194445740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9722296 (or 9722294 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 194445740 is about 13944.3802300425. The cubic root of 194445740 is about 579.3390608265.

The spelling of 194445740 in words is "one hundred ninety-four million, four hundred forty-five thousand, seven hundred forty".