5811809800 has 48 divisors (see below), whose sum is σ = 13518124740. Its totient is φ = 2323749120.

The previous prime is 5811809797. The next prime is 5811809803. The reversal of 5811809800 is 89081185.

It is an interprime number because it is at equal distance from previous prime (5811809797) and next prime (5811809803).

It can be written as a sum of positive squares in 6 ways, for example, as 3414532356 + 2397277444 = 58434^2 + 48962^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (5811809803) 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, 646134 + ... + 655066.

Almost surely, 2^5811809800 is an apocalyptic number.

5811809800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5811809800 is an abundant number, since it is smaller than the sum of its proper divisors (7706314940).

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

5811809800 is a wasteful number, since it uses less digits than its factorization.

5811809800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12202 (or 12193 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 40.

The square root of 5811809800 is about 76235.2267655839. The cubic root of 5811809800 is about 1797.9204172640.

The spelling of 5811809800 in words is "five billion, eight hundred eleven million, eight hundred nine thousand, eight hundred".