2749191851 has 8 divisors (see below), whose sum is σ = 3250276320. Its totient is φ = 2275193088.

The previous prime is 2749191827. The next prime is 2749191857. The reversal of 2749191851 is 1581919472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2749191851 - 2¹⁰ = 2749190827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2749191796 and 2749191805.

It is not an unprimeable number, because it can be changed into a prime (2749191857) 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 in 7 ways as a sum of consecutive naturals, for example, 6771206 + ... + 6771611.

It is an arithmetic number, because the mean of its divisors is an integer number (406284540).

Almost surely, 2^2749191851 is an apocalyptic number.

2749191851 is a deficient number, since it is larger than the sum of its proper divisors (501084469).

2749191851 is a wasteful number, since it uses less digits than its factorization.

2749191851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13542853.

The product of its digits is 181440, while the sum is 47.

The square root of 2749191851 is about 52432.7364439431. The cubic root of 2749191851 is about 1400.8824115616.

The spelling of 2749191851 in words is "two billion, seven hundred forty-nine million, one hundred ninety-one thousand, eight hundred fifty-one".