3801804813 has 12 divisors (see below), whose sum is σ = 5492840028. Its totient is φ = 2533916160.

The previous prime is 3801804751. The next prime is 3801804857. The reversal of 3801804813 is 3184081083.

It can be written as a sum of positive squares in 2 ways, for example, as 1935824004 + 1865980809 = 43998^2 + 43197^2 .

It is not a de Polignac number, because 3801804813 - 2⁸ = 3801804557 is a prime.

It is a super-2 number, since 2×3801804813² = 28907439672299929938, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3801804313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11220 + ... + 87917.

It is an arithmetic number, because the mean of its divisors is an integer number (457736669).

Almost surely, 2^3801804813 is an apocalyptic number.

It is an amenable number.

3801804813 is a deficient number, since it is larger than the sum of its proper divisors (1691035215).

3801804813 is a wasteful number, since it uses less digits than its factorization.

3801804813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103404 (or 103401 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 3801804813 is about 61658.7772583920. Note that the first 3 decimals coincide. The cubic root of 3801804813 is about 1560.7377637103.

Adding to 3801804813 its reverse (3184081083), we get a palindrome (6985885896).

The spelling of 3801804813 in words is "three billion, eight hundred one million, eight hundred four thousand, eight hundred thirteen".