5815841840 has 20 divisors (see below), whose sum is σ = 13521832464. Its totient is φ = 2326336704.

The previous prime is 5815841839. The next prime is 5815841873. The reversal of 5815841840 is 481485185.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 5815841791 and 5815841800.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36348932 + ... + 36349091.

Almost surely, 2^5815841840 is an apocalyptic number.

It is an amenable number.

5815841840 is an abundant number, since it is smaller than the sum of its proper divisors (7705990624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5815841840 is a wasteful number, since it uses less digits than its factorization.

5815841840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72698036 (or 72698030 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 44.

The square root of 5815841840 is about 76261.6669107095. Note that the first 3 decimals coincide. The cubic root of 5815841840 is about 1798.3361002438.

The spelling of 5815841840 in words is "five billion, eight hundred fifteen million, eight hundred forty-one thousand, eight hundred forty".