2544690469 has 4 divisors (see below), whose sum is σ = 2544824044. Its totient is φ = 2544556896.

The previous prime is 2544690451. The next prime is 2544690523. The reversal of 2544690469 is 9640964452.

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 638320225 + 1906370244 = 25265^2 + 43662^2 .

It is a cyclic number.

It is not a de Polignac number, because 2544690469 - 2¹³ = 2544682277 is a prime.

It is a super-2 number, since 2×2544690469² = 12950899166038879922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544690439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32262 + ... + 78295.

It is an arithmetic number, because the mean of its divisors is an integer number (636206011).

Almost surely, 2^2544690469 is an apocalyptic number.

It is an amenable number.

2544690469 is a deficient number, since it is larger than the sum of its proper divisors (133575).

2544690469 is a wasteful number, since it uses less digits than its factorization.

2544690469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133574.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The square root of 2544690469 is about 50444.9251064961. The cubic root of 2544690469 is about 1365.2483313345.

The spelling of 2544690469 in words is "two billion, five hundred forty-four million, six hundred ninety thousand, four hundred sixty-nine".