5181497244 has 72 divisors (see below), whose sum is σ = 16329575808. Its totient is φ = 1345842720.

The previous prime is 5181497231. The next prime is 5181497273. The reversal of 5181497244 is 4427941815.

5181497244 is a `hidden beast` number, since 518 + 1 + 4 + 97 + 2 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 5181497244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 931842 + ... + 937385.

It is an arithmetic number, because the mean of its divisors is an integer number (226799664).

Almost surely, 2^5181497244 is an apocalyptic number.

It is an amenable number.

5181497244 is an abundant number, since it is smaller than the sum of its proper divisors (11148078564).

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

5181497244 is a wasteful number, since it uses less digits than its factorization.

5181497244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869255 (or 1869250 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 5181497244 is about 71982.6176517637. The cubic root of 5181497244 is about 1730.4209211121.

The spelling of 5181497244 in words is "five billion, one hundred eighty-one million, four hundred ninety-seven thousand, two hundred forty-four".