2745780191 has 16 divisors (see below), whose sum is σ = 3431719680. Its totient is φ = 2134313280.

The previous prime is 2745780157. The next prime is 2745780197. The reversal of 2745780191 is 1910875472.

It is not a de Polignac number, because 2745780191 - 2¹⁴ = 2745763807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745780197) 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 15 ways as a sum of consecutive naturals, for example, 12101 + ... + 75086.

It is an arithmetic number, because the mean of its divisors is an integer number (214482480).

Almost surely, 2^2745780191 is an apocalyptic number.

2745780191 is a deficient number, since it is larger than the sum of its proper divisors (685939489).

2745780191 is a wasteful number, since it uses less digits than its factorization.

2745780191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87614.

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 2745780191 is about 52400.1926618596. The cubic root of 2745780191 is about 1400.3026881238.

The spelling of 2745780191 in words is "two billion, seven hundred forty-five million, seven hundred eighty thousand, one hundred ninety-one".