5149945771 has 2 divisors, whose sum is σ = 5149945772. Its totient is φ = 5149945770.

The previous prime is 5149945769. The next prime is 5149945777. The reversal of 5149945771 is 1775499415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5149945771 - 2¹ = 5149945769 is a prime.

Together with 5149945769, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5149945777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2574972885 + 2574972886.

It is an arithmetic number, because the mean of its divisors is an integer number (2574972886).

Almost surely, 2^5149945771 is an apocalyptic number.

5149945771 is a deficient number, since it is larger than the sum of its proper divisors (1).

5149945771 is an equidigital number, since it uses as much as digits as its factorization.

5149945771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1587600, while the sum is 52.

The square root of 5149945771 is about 71763.1226396957. The cubic root of 5149945771 is about 1726.9014413242.

The spelling of 5149945771 in words is "five billion, one hundred forty-nine million, nine hundred forty-five thousand, seven hundred seventy-one".