5236161840 has 640 divisors, whose sum is σ = 23518494720. Its totient is φ = 1039122432.

The previous prime is 5236161817. The next prime is 5236161877. The reversal of 5236161840 is 481616325.

It is a happy number.

5236161840 is a `hidden beast` number, since 5 + 2 + 36 + 1 + 618 + 4 + 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 = 5236161795 and 5236161804.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3340737 + ... + 3342303.

It is an arithmetic number, because the mean of its divisors is an integer number (36747648).

Almost surely, 2^5236161840 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 5236161840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11759247360).

5236161840 is an abundant number, since it is smaller than the sum of its proper divisors (18282332880).

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

5236161840 is a wasteful number, since it uses less digits than its factorization.

5236161840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626 (or 1614 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 5236161840 is about 72361.3283460164. The cubic root of 5236161840 is about 1736.4849371173.

The spelling of 5236161840 in words is "five billion, two hundred thirty-six million, one hundred sixty-one thousand, eight hundred forty".