5191806240 has 384 divisors, whose sum is σ = 19585843200. Its totient is φ = 1280240640.

The previous prime is 5191806233. The next prime is 5191806241. The reversal of 5191806240 is 426081915.

5191806240 is a `hidden beast` number, since 5 + 19 + 18 + 0 + 624 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 5191806195 and 5191806204.

It is not an unprimeable number, because it can be changed into a prime (5191806241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3528705 + ... + 3530175.

It is an arithmetic number, because the mean of its divisors is an integer number (51004800).

Almost surely, 2^5191806240 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 5191806240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9792921600).

5191806240 is an abundant number, since it is smaller than the sum of its proper divisors (14394036960).

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

5191806240 is a wasteful number, since it uses less digits than its factorization.

5191806240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 5191806240 is about 72054.1896075447. The cubic root of 5191806240 is about 1731.5677636778.

The spelling of 5191806240 in words is "five billion, one hundred ninety-one million, eight hundred six thousand, two hundred forty".