2113603045 has 4 divisors (see below), whose sum is σ = 2536323660. Its totient is φ = 1690882432.

The previous prime is 2113603007. The next prime is 2113603049. The reversal of 2113603045 is 5403063112.

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 887622849 + 1225980196 = 29793^2 + 35014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113603045 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113603049) 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, 211360300 + ... + 211360309.

It is an arithmetic number, because the mean of its divisors is an integer number (634080915).

Almost surely, 2^2113603045 is an apocalyptic number.

It is an amenable number.

2113603045 is a deficient number, since it is larger than the sum of its proper divisors (422720615).

2113603045 is an equidigital number, since it uses as much as digits as its factorization.

2113603045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422720614.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2113603045 is about 45973.9387588229. The cubic root of 2113603045 is about 1283.3382598713.

Adding to 2113603045 its reverse (5403063112), we get a palindrome (7516666157).

The spelling of 2113603045 in words is "two billion, one hundred thirteen million, six hundred three thousand, forty-five".