2040185813 has 8 divisors (see below), whose sum is σ = 2135742336. Its totient is φ = 1945200400.

The previous prime is 2040185803. The next prime is 2040185843. The reversal of 2040185813 is 3185810402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2040185813 - 2²⁰ = 2039137237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2040185813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040185803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135458 + ... + 149763.

It is an arithmetic number, because the mean of its divisors is an integer number (266967792).

Almost surely, 2^2040185813 is an apocalyptic number.

2040185813 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2040185813 is a deficient number, since it is larger than the sum of its proper divisors (95556523).

2040185813 is a wasteful number, since it uses less digits than its factorization.

2040185813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285555.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 2040185813 is about 45168.4161001911. The cubic root of 2040185813 is about 1268.3036464685.

The spelling of 2040185813 in words is "two billion, forty million, one hundred eighty-five thousand, eight hundred thirteen".