5815249020 has 144 divisors (see below), whose sum is σ = 20195098560. Its totient is φ = 1326855168.

The previous prime is 5815248997. The next prime is 5815249021. The reversal of 5815249020 is 209425185.

5815249020 is a `hidden beast` number, since 581 + 52 + 4 + 9 + 0 + 20 = 666.

It is a super-2 number, since 2×5815249020² = 67634242329221920800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5815249021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 768616 + ... + 776144.

It is an arithmetic number, because the mean of its divisors is an integer number (140243740).

Almost surely, 2^5815249020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5815249020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10097549280).

5815249020 is an abundant number, since it is smaller than the sum of its proper divisors (14379849540).

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

5815249020 is a wasteful number, since it uses less digits than its factorization.

5815249020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8164 (or 8159 counting only the distinct ones).

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

The square root of 5815249020 is about 76257.7800621025. The cubic root of 5815249020 is about 1798.2749955427.

The spelling of 5815249020 in words is "five billion, eight hundred fifteen million, two hundred forty-nine thousand, twenty".