5118531372 has 96 divisors (see below), whose sum is σ = 13987814400. Its totient is φ = 1614168000.

The previous prime is 5118531367. The next prime is 5118531373. The reversal of 5118531372 is 2731358115.

It is a happy number.

5118531372 is a `hidden beast` number, since 5 + 118 + 531 + 3 + 7 + 2 = 666.

It is a super-2 number, since 2×5118531372² = 52398726812296404768, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (5118531373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2175997 + ... + 2178347.

It is an arithmetic number, because the mean of its divisors is an integer number (145706400).

Almost surely, 2^5118531372 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 5118531372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6993907200).

5118531372 is an abundant number, since it is smaller than the sum of its proper divisors (8869283028).

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

5118531372 is a wasteful number, since it uses less digits than its factorization.

5118531372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444 (or 3436 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 5118531372 is about 71543.9121938408. The cubic root of 5118531372 is about 1723.3829413127.

Adding to 5118531372 its reverse (2731358115), we get a palindrome (7849889487).

The spelling of 5118531372 in words is "five billion, one hundred eighteen million, five hundred thirty-one thousand, three hundred seventy-two".