194311220380 has 12 divisors (see below), whose sum is σ = 408053562840. Its totient is φ = 77724488144.

The previous prime is 194311220359. The next prime is 194311220381. The reversal of 194311220380 is 83022113491.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194311220381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4857780490 + ... + 4857780529.

It is an arithmetic number, because the mean of its divisors is an integer number (34004463570).

Almost surely, 2^194311220380 is an apocalyptic number.

194311220380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194311220380 is an abundant number, since it is smaller than the sum of its proper divisors (213742342460).

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

194311220380 is a wasteful number, since it uses less digits than its factorization.

194311220380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9715561028 (or 9715561026 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 194311220380 in words is "one hundred ninety-four billion, three hundred eleven million, two hundred twenty thousand, three hundred eighty".