2745781319 has 2 divisors, whose sum is σ = 2745781320. Its totient is φ = 2745781318.

The previous prime is 2745781309. The next prime is 2745781373. The reversal of 2745781319 is 9131875472.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2745781319 - 2²⁸ = 2477345863 is a prime.

It is a super-2 number, since 2×2745781319² = 15078630103538759522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2745781309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1372890659 + 1372890660.

It is an arithmetic number, because the mean of its divisors is an integer number (1372890660).

Almost surely, 2^2745781319 is an apocalyptic number.

2745781319 is a deficient number, since it is larger than the sum of its proper divisors (1).

2745781319 is an equidigital number, since it uses as much as digits as its factorization.

2745781319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 47.

The square root of 2745781319 is about 52400.2034251777. The cubic root of 2745781319 is about 1400.3028798776.

The spelling of 2745781319 in words is "two billion, seven hundred forty-five million, seven hundred eighty-one thousand, three hundred nineteen".