2045354513 has 4 divisors (see below), whose sum is σ = 2066440740. Its totient is φ = 2024268288.

The previous prime is 2045354501. The next prime is 2045354537. The reversal of 2045354513 is 3154535402.

It is a happy number.

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 1109422864 + 935931649 = 33308^2 + 30593^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045354513 - 2⁴ = 2045354497 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 2045354513.

It is not an unprimeable number, because it can be changed into a prime (2045357513) 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, 10542968 + ... + 10543161.

It is an arithmetic number, because the mean of its divisors is an integer number (516610185).

Almost surely, 2^2045354513 is an apocalyptic number.

It is an amenable number.

2045354513 is a deficient number, since it is larger than the sum of its proper divisors (21086227).

2045354513 is an equidigital number, since it uses as much as digits as its factorization.

2045354513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21086226.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 2045354513 is about 45225.5957727480. The cubic root of 2045354513 is about 1269.3738027273.

Adding to 2045354513 its reverse (3154535402), we get a palindrome (5199889915).

The spelling of 2045354513 in words is "two billion, forty-five million, three hundred fifty-four thousand, five hundred thirteen".