2678895009 has 12 divisors (see below), whose sum is σ = 4422302976. Its totient is φ = 1530797112.

The previous prime is 2678895007. The next prime is 2678895029. The reversal of 2678895009 is 9005988762.

It is a happy number.

It is not a de Polignac number, because 2678895009 - 2¹ = 2678895007 is a prime.

It is a super-2 number, since 2×2678895009² = 14352956938490220162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2678895007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21261009 + ... + 21261134.

It is an arithmetic number, because the mean of its divisors is an integer number (368525248).

Almost surely, 2^2678895009 is an apocalyptic number.

It is an amenable number.

2678895009 is a deficient number, since it is larger than the sum of its proper divisors (1743407967).

2678895009 is a wasteful number, since it uses less digits than its factorization.

2678895009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42522156 (or 42522153 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 2678895009 is about 51758.0429402040. The cubic root of 2678895009 is about 1388.8389816878.

The spelling of 2678895009 in words is "two billion, six hundred seventy-eight million, eight hundred ninety-five thousand, nine".