2043756813 has 16 divisors (see below), whose sum is σ = 3297490560. Its totient is φ = 1099163136.

The previous prime is 2043756791. The next prime is 2043756823. The reversal of 2043756813 is 3186573402.

It is not a de Polignac number, because 2043756813 - 2⁹ = 2043756301 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043756823) 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, 2862048 + ... + 2862761.

It is an arithmetic number, because the mean of its divisors is an integer number (206093160).

Almost surely, 2^2043756813 is an apocalyptic number.

It is an amenable number.

2043756813 is a deficient number, since it is larger than the sum of its proper divisors (1253733747).

2043756813 is a wasteful number, since it uses less digits than its factorization.

2043756813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5724836.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 2043756813 is about 45207.9286519522. The cubic root of 2043756813 is about 1269.0431987808.

The spelling of 2043756813 in words is "two billion, forty-three million, seven hundred fifty-six thousand, eight hundred thirteen".