194031091830 has 64 divisors (see below), whose sum is σ = 475977047040. Its totient is φ = 50609155584.

The previous prime is 194031091789. The next prime is 194031091853. The reversal of 194031091830 is 38190130491.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128979 + ... + 636158.

It is an arithmetic number, because the mean of its divisors is an integer number (7437141360).

Almost surely, 2^194031091830 is an apocalyptic number.

194031091830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194031091830 is an abundant number, since it is smaller than the sum of its proper divisors (281945955210).

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

194031091830 is a wasteful number, since it uses less digits than its factorization.

194031091830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765333.

The product of its (nonzero) digits is 23328, while the sum is 39.

The spelling of 194031091830 in words is "one hundred ninety-four billion, thirty-one million, ninety-one thousand, eight hundred thirty".