5181491743 has 2 divisors, whose sum is σ = 5181491744. Its totient is φ = 5181491742.

The previous prime is 5181491671. The next prime is 5181491771. The reversal of 5181491743 is 3471941815.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5181491743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5181491743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5181491143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2590745871 + 2590745872.

It is an arithmetic number, because the mean of its divisors is an integer number (2590745872).

Almost surely, 2^5181491743 is an apocalyptic number.

5181491743 is a deficient number, since it is larger than the sum of its proper divisors (1).

5181491743 is an equidigital number, since it uses as much as digits as its factorization.

5181491743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 43.

The square root of 5181491743 is about 71982.5794411398. The cubic root of 5181491743 is about 1730.4203087377.

The spelling of 5181491743 in words is "five billion, one hundred eighty-one million, four hundred ninety-one thousand, seven hundred forty-three".