5181249936 has 80 divisors (see below), whose sum is σ = 14187109824. Its totient is φ = 1623785472.

The previous prime is 5181249907. The next prime is 5181249937. The reversal of 5181249936 is 6399421815.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (5181249937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 938095 + ... + 943601.

Almost surely, 2^5181249936 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 5181249936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7093554912).

5181249936 is an abundant number, since it is smaller than the sum of its proper divisors (9005859888).

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

5181249936 is a wasteful number, since it uses less digits than its factorization.

5181249936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6688 (or 6682 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The square root of 5181249936 is about 71980.8997998775. The cubic root of 5181249936 is about 1730.3933902186.

The spelling of 5181249936 in words is "five billion, one hundred eighty-one million, two hundred forty-nine thousand, nine hundred thirty-six".