2649308723 has 4 divisors (see below), whose sum is σ = 2649646320. Its totient is φ = 2648971128.

The previous prime is 2649308699. The next prime is 2649308731. The reversal of 2649308723 is 3278039462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2649308723 - 2¹⁰ = 2649307699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2649301723) 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, 156740 + ... + 172817.

It is an arithmetic number, because the mean of its divisors is an integer number (662411580).

Almost surely, 2^2649308723 is an apocalyptic number.

2649308723 is a deficient number, since it is larger than the sum of its proper divisors (337597).

2649308723 is an equidigital number, since it uses as much as digits as its factorization.

2649308723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337596.

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 2649308723 is about 51471.4359912369. The cubic root of 2649308723 is about 1383.7071651140.

The spelling of 2649308723 in words is "two billion, six hundred forty-nine million, three hundred eight thousand, seven hundred twenty-three".