9381820194 has 32 divisors (see below), whose sum is σ = 20858618880. Its totient is φ = 3125754000.

The previous prime is 9381820193. The next prime is 9381820211. The reversal of 9381820194 is 4910281839.

9381820194 is a `hidden beast` number, since 9 + 381 + 82 + 0 + 194 = 666.

9381820194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (9381820193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72844 + ... + 155144.

It is an arithmetic number, because the mean of its divisors is an integer number (651831840).

Almost surely, 2^9381820194 is an apocalyptic number.

9381820194 is an abundant number, since it is smaller than the sum of its proper divisors (11476798686).

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

9381820194 is a wasteful number, since it uses less digits than its factorization.

9381820194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84423 (or 84417 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 9381820194 is about 96859.7965824831. The cubic root of 9381820194 is about 2109.0928614802.

The spelling of 9381820194 in words is "nine billion, three hundred eighty-one million, eight hundred twenty thousand, one hundred ninety-four".