2013935645 has 4 divisors (see below), whose sum is σ = 2416722780. Its totient is φ = 1611148512.

The previous prime is 2013935633. The next prime is 2013935681. The reversal of 2013935645 is 5465393102.

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 630913924 + 1383021721 = 25118^2 + 37189^2 .

It is a cyclic number.

It is not a de Polignac number, because 2013935645 - 2⁴ = 2013935629 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2013935599 and 2013935608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201393560 + ... + 201393569.

It is an arithmetic number, because the mean of its divisors is an integer number (604180695).

Almost surely, 2^2013935645 is an apocalyptic number.

It is an amenable number.

2013935645 is a deficient number, since it is larger than the sum of its proper divisors (402787135).

2013935645 is an equidigital number, since it uses as much as digits as its factorization.

2013935645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402787134.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 2013935645 is about 44876.8943332758. The cubic root of 2013935645 is about 1262.8405815119.

The spelling of 2013935645 in words is "two billion, thirteen million, nine hundred thirty-five thousand, six hundred forty-five".