2040545729 has 4 divisors (see below), whose sum is σ = 2040902100. Its totient is φ = 2040189360.

The previous prime is 2040545701. The next prime is 2040545743. The reversal of 2040545729 is 9275450402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 705008704 + 1335537025 = 26552^2 + 36545^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040545729 - 2²⁸ = 1772110273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2040545692 and 2040545701.

It is not an unprimeable number, because it can be changed into a prime (2040545789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169454 + ... + 181095.

It is an arithmetic number, because the mean of its divisors is an integer number (510225525).

Almost surely, 2^2040545729 is an apocalyptic number.

It is an amenable number.

2040545729 is a deficient number, since it is larger than the sum of its proper divisors (356371).

2040545729 is an equidigital number, since it uses as much as digits as its factorization.

2040545729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356370.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 2040545729 is about 45172.4000801374. The cubic root of 2040545729 is about 1268.3782239787.

The spelling of 2040545729 in words is "two billion, forty million, five hundred forty-five thousand, seven hundred twenty-nine".