2745563843 has 16 divisors (see below), whose sum is σ = 3131156736. Its totient is φ = 2383038240.

The previous prime is 2745563839. The next prime is 2745563881. The reversal of 2745563843 is 3483655472.

It is not a de Polignac number, because 2745563843 - 2² = 2745563839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2745563543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131180 + ... + 150662.

It is an arithmetic number, because the mean of its divisors is an integer number (195697296).

Almost surely, 2^2745563843 is an apocalyptic number.

2745563843 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2745563843 is a deficient number, since it is larger than the sum of its proper divisors (385592893).

2745563843 is a wasteful number, since it uses less digits than its factorization.

2745563843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20074.

The product of its digits is 2419200, while the sum is 47.

The square root of 2745563843 is about 52398.1282394705. The cubic root of 2745563843 is about 1400.2659091852.

The spelling of 2745563843 in words is "two billion, seven hundred forty-five million, five hundred sixty-three thousand, eight hundred forty-three".