2687734109 has 2 divisors, whose sum is σ = 2687734110. Its totient is φ = 2687734108.

The previous prime is 2687734079. The next prime is 2687734117. The reversal of 2687734109 is 9014377862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1537032025 + 1150702084 = 39205^2 + 33922^2 .

It is a cyclic number.

It is not a de Polignac number, because 2687734109 - 2¹⁶ = 2687668573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2687734139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343867054 + 1343867055.

It is an arithmetic number, because the mean of its divisors is an integer number (1343867055).

Almost surely, 2^2687734109 is an apocalyptic number.

It is an amenable number.

2687734109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2687734109 is an equidigital number, since it uses as much as digits as its factorization.

2687734109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 2687734109 is about 51843.3612818459. The cubic root of 2687734109 is about 1390.3648109964.

It can be divided in two parts, 268 and 7734109, that added together give a palindrome (7734377).

The spelling of 2687734109 in words is "two billion, six hundred eighty-seven million, seven hundred thirty-four thousand, one hundred nine".