2684865137 has 2 divisors, whose sum is σ = 2684865138. Its totient is φ = 2684865136.

The previous prime is 2684865133. The next prime is 2684865173. The reversal of 2684865137 is 7315684862.

Together with next prime (2684865173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2625127696 + 59737441 = 51236^2 + 7729^2 .

It is a cyclic number.

It is not a de Polignac number, because 2684865137 - 2² = 2684865133 is a prime.

It is not a weakly prime, because it can be changed into another prime (2684865133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1342432568 + 1342432569.

It is an arithmetic number, because the mean of its divisors is an integer number (1342432569).

Almost surely, 2^2684865137 is an apocalyptic number.

It is an amenable number.

2684865137 is a deficient number, since it is larger than the sum of its proper divisors (1).

2684865137 is an equidigital number, since it uses as much as digits as its factorization.

2684865137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 50.

The square root of 2684865137 is about 51815.6842760954. The cubic root of 2684865137 is about 1389.8699284805.

The spelling of 2684865137 in words is "two billion, six hundred eighty-four million, eight hundred sixty-five thousand, one hundred thirty-seven".