194103081 has 8 divisors (see below), whose sum is σ = 287560160. Its totient is φ = 129402036.

The previous prime is 194103071. The next prime is 194103089. The reversal of 194103081 is 180301491.

194103081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 194103081 - 2⁶ = 194103017 is a prime.

It is a super-2 number, since 2×194103081² = 75352012107385122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 7189003 = 194103081 / (1 + 9 + 4 + 1 + 0 + 3 + 0 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194103089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3594475 + ... + 3594528.

It is an arithmetic number, because the mean of its divisors is an integer number (35945020).

Almost surely, 2^194103081 is an apocalyptic number.

It is an amenable number.

194103081 is a deficient number, since it is larger than the sum of its proper divisors (93457079).

194103081 is an equidigital number, since it uses as much as digits as its factorization.

194103081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7189012 (or 7189006 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 194103081 is about 13932.0881780155. The cubic root of 194103081 is about 578.9985502930.

The spelling of 194103081 in words is "one hundred ninety-four million, one hundred three thousand, eighty-one".