5181306791 has 2 divisors, whose sum is σ = 5181306792. Its totient is φ = 5181306790.

The previous prime is 5181306787. The next prime is 5181306797. The reversal of 5181306791 is 1976031815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5181306791 - 2² = 5181306787 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5181306797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2590653395 + 2590653396.

It is an arithmetic number, because the mean of its divisors is an integer number (2590653396).

Almost surely, 2^5181306791 is an apocalyptic number.

5181306791 is a deficient number, since it is larger than the sum of its proper divisors (1).

5181306791 is an equidigital number, since it uses as much as digits as its factorization.

5181306791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 5181306791 is about 71981.2947299505. The cubic root of 5181306791 is about 1730.3997195251.

The spelling of 5181306791 in words is "five billion, one hundred eighty-one million, three hundred six thousand, seven hundred ninety-one".