5815803213 has 16 divisors (see below), whose sum is σ = 9399278400. Its totient is φ = 3524729040.

The previous prime is 5815803209. The next prime is 5815803221. The reversal of 5815803213 is 3123085185.

5815803213 is a `hidden beast` number, since 58 + 1 + 580 + 3 + 21 + 3 = 666.

It is not a de Polignac number, because 5815803213 - 2² = 5815803209 is a prime.

It is a super-2 number, since 2×5815803213² = 67647134024682246738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5815803263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9790618 + ... + 9791211.

It is an arithmetic number, because the mean of its divisors is an integer number (587454900).

Almost surely, 2^5815803213 is an apocalyptic number.

It is an amenable number.

5815803213 is a deficient number, since it is larger than the sum of its proper divisors (3583475187).

5815803213 is a wasteful number, since it uses less digits than its factorization.

5815803213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19581849 (or 19581843 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 5815803213 is about 76261.4136572356. The cubic root of 5815803213 is about 1798.3321189066.

Adding to 5815803213 its reverse (3123085185), we get a palindrome (8938888398).

The spelling of 5815803213 in words is "five billion, eight hundred fifteen million, eight hundred three thousand, two hundred thirteen".