2649128695 has 8 divisors (see below), whose sum is σ = 3256490160. Its totient is φ = 2067612480.

The previous prime is 2649128693. The next prime is 2649128711. The reversal of 2649128695 is 5968219462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2649128695 - 2¹ = 2649128693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649128693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6461085 + ... + 6461494.

It is an arithmetic number, because the mean of its divisors is an integer number (407061270).

Almost surely, 2^2649128695 is an apocalyptic number.

2649128695 is a deficient number, since it is larger than the sum of its proper divisors (607361465).

2649128695 is a wasteful number, since it uses less digits than its factorization.

2649128695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12922625.

The product of its digits is 1866240, while the sum is 52.

The square root of 2649128695 is about 51469.6871469023. The cubic root of 2649128695 is about 1383.6758221358.

The spelling of 2649128695 in words is "two billion, six hundred forty-nine million, one hundred twenty-eight thousand, six hundred ninety-five".