2040650813 has 4 divisors (see below), whose sum is σ = 2046498300. Its totient is φ = 2034803328.

The previous prime is 2040650791. The next prime is 2040650839. The reversal of 2040650813 is 3180560402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3180560402 = 2 ⋅1590280201.

It can be written as a sum of positive squares in 2 ways, for example, as 1126072249 + 914578564 = 33557^2 + 30242^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040650813 - 2¹² = 2040646717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040650713) 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, 2923220 + ... + 2923917.

It is an arithmetic number, because the mean of its divisors is an integer number (511624575).

Almost surely, 2^2040650813 is an apocalyptic number.

It is an amenable number.

2040650813 is a deficient number, since it is larger than the sum of its proper divisors (5847487).

2040650813 is an equidigital number, since it uses as much as digits as its factorization.

2040650813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5847486.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 2040650813 is about 45173.5632090275. The cubic root of 2040650813 is about 1268.3999965806.

The spelling of 2040650813 in words is "two billion, forty million, six hundred fifty thousand, eight hundred thirteen".