2645051513 has 4 divisors (see below), whose sum is σ = 2848517028. Its totient is φ = 2441586000.

The previous prime is 2645051489. The next prime is 2645051531. The reversal of 2645051513 is 3151505462.

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 442345024 + 2202706489 = 21032^2 + 46933^2 .

It is a cyclic number.

It is not a de Polignac number, because 2645051513 - 2¹⁸ = 2644789369 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 2645051513.

It is not an unprimeable number, because it can be changed into a prime (2645051593) 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, 101732738 + ... + 101732763.

It is an arithmetic number, because the mean of its divisors is an integer number (712129257).

Almost surely, 2^2645051513 is an apocalyptic number.

It is an amenable number.

2645051513 is a deficient number, since it is larger than the sum of its proper divisors (203465515).

2645051513 is a wasteful number, since it uses less digits than its factorization.

2645051513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203465514.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 2645051513 is about 51430.0642912295. The cubic root of 2645051513 is about 1382.9656018465.

Adding to 2645051513 its reverse (3151505462), we get a palindrome (5796556975).

The spelling of 2645051513 in words is "two billion, six hundred forty-five million, fifty-one thousand, five hundred thirteen".