3813820245173 has 8 divisors (see below), whose sum is σ = 3945367625880. Its totient is φ = 3682275287040.

The previous prime is 3813820245113. The next prime is 3813820245197. The reversal of 3813820245173 is 3715420283183.

It can be written as a sum of positive squares in 4 ways, for example, as 305473973809 + 3508346271364 = 552697^2 + 1873058^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3813820245173 - 2¹⁴ = 3813820228789 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 (3813820245113) 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, 2951393 + ... + 4042073.

It is an arithmetic number, because the mean of its divisors is an integer number (493170953235).

Almost surely, 2^{3813820245173} is an apocalyptic number.

It is an amenable number.

3813820245173 is a deficient number, since it is larger than the sum of its proper divisors (131547380707).

3813820245173 is a wasteful number, since it uses less digits than its factorization.

3813820245173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211287.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 3813820245173 in words is "three trillion, eight hundred thirteen billion, eight hundred twenty million, two hundred forty-five thousand, one hundred seventy-three".