2647891365 has 16 divisors (see below), whose sum is σ = 4841858688. Its totient is φ = 1210464576.

The previous prime is 2647891297. The next prime is 2647891369. The reversal of 2647891365 is 5631987462.

It is not a de Polignac number, because 2647891365 - 2¹¹ = 2647889317 is a prime.

It is a super-2 number, since 2×2647891365² = 14022657361683126450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2647891369) 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 15 ways as a sum of consecutive naturals, for example, 12608902 + ... + 12609111.

It is an arithmetic number, because the mean of its divisors is an integer number (302616168).

Almost surely, 2^2647891365 is an apocalyptic number.

It is an amenable number.

2647891365 is a deficient number, since it is larger than the sum of its proper divisors (2193967323).

2647891365 is a wasteful number, since it uses less digits than its factorization.

2647891365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25218028.

The product of its digits is 2177280, while the sum is 51.

The square root of 2647891365 is about 51457.6657554538. The cubic root of 2647891365 is about 1383.4603638446.

The spelling of 2647891365 in words is "two billion, six hundred forty-seven million, eight hundred ninety-one thousand, three hundred sixty-five".