2662872509 has 4 divisors (see below), whose sum is σ = 2904951840. Its totient is φ = 2420793180.

The previous prime is 2662872497. The next prime is 2662872517. The reversal of 2662872509 is 9052782662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2662872509 - 2¹² = 2662868413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2662872559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121039649 + ... + 121039670.

It is an arithmetic number, because the mean of its divisors is an integer number (726237960).

Almost surely, 2^2662872509 is an apocalyptic number.

It is an amenable number.

2662872509 is a deficient number, since it is larger than the sum of its proper divisors (242079331).

2662872509 is a wasteful number, since it uses less digits than its factorization.

2662872509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242079330.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 2662872509 is about 51603.0280991339. The cubic root of 2662872509 is about 1386.0645560378.

The spelling of 2662872509 in words is "two billion, six hundred sixty-two million, eight hundred seventy-two thousand, five hundred nine".