2765490009 has 4 divisors (see below), whose sum is σ = 3687320016. Its totient is φ = 1843660004.

The previous prime is 2765489999. The next prime is 2765490023. The reversal of 2765490009 is 9000945672.

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 2765490009 - 2¹⁵ = 2765457241 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2765490209) 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, 460914999 + ... + 460915004.

It is an arithmetic number, because the mean of its divisors is an integer number (921830004).

Almost surely, 2^2765490009 is an apocalyptic number.

It is an amenable number.

2765490009 is a deficient number, since it is larger than the sum of its proper divisors (921830007).

2765490009 is an equidigital number, since it uses as much as digits as its factorization.

2765490009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921830006.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 2765490009 is about 52587.9264565546. The cubic root of 2765490009 is about 1403.6452638060.

The spelling of 2765490009 in words is "two billion, seven hundred sixty-five million, four hundred ninety thousand, nine".