194803013 has 4 divisors (see below), whose sum is σ = 199554348. Its totient is φ = 190051680.

The previous prime is 194803009. The next prime is 194803027. The reversal of 194803013 is 310308491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310308491 = 3929 ⋅78979.

It can be written as a sum of positive squares in 2 ways, for example, as 25230529 + 169572484 = 5023^2 + 13022^2 .

It is a cyclic number.

It is not a de Polignac number, because 194803013 - 2² = 194803009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194803003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2375606 + ... + 2375687.

It is an arithmetic number, because the mean of its divisors is an integer number (49888587).

Almost surely, 2^194803013 is an apocalyptic number.

It is an amenable number.

194803013 is a deficient number, since it is larger than the sum of its proper divisors (4751335).

194803013 is an equidigital number, since it uses as much as digits as its factorization.

194803013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4751334.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 194803013 is about 13957.1849955498. The cubic root of 194803013 is about 579.6936680028.

The spelling of 194803013 in words is "one hundred ninety-four million, eight hundred three thousand, thirteen".