2749136191 has 2 divisors, whose sum is σ = 2749136192. Its totient is φ = 2749136190.

The previous prime is 2749136189. The next prime is 2749136231. The reversal of 2749136191 is 1916319472.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2749136191 - 2¹ = 2749136189 is a prime.

Together with 2749136189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2749136491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1374568095 + 1374568096.

It is an arithmetic number, because the mean of its divisors is an integer number (1374568096).

Almost surely, 2^2749136191 is an apocalyptic number.

2749136191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2749136191 is an equidigital number, since it uses as much as digits as its factorization.

2749136191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 2749136191 is about 52432.2056659836. The cubic root of 2749136191 is about 1400.8729574328.

The spelling of 2749136191 in words is "two billion, seven hundred forty-nine million, one hundred thirty-six thousand, one hundred ninety-one".