194310683891 has 16 divisors (see below), whose sum is σ = 197640643200. Its totient is φ = 191006562240.

The previous prime is 194310683849. The next prime is 194310683899. The reversal of 194310683891 is 198386013491.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194310683891 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194310683899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14827460 + ... + 14840558.

It is an arithmetic number, because the mean of its divisors is an integer number (12352540200).

Almost surely, 2^194310683891 is an apocalyptic number.

194310683891 is a deficient number, since it is larger than the sum of its proper divisors (3329959309).

194310683891 is a wasteful number, since it uses less digits than its factorization.

194310683891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14066.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The spelling of 194310683891 in words is "one hundred ninety-four billion, three hundred ten million, six hundred eighty-three thousand, eight hundred ninety-one".