2729867865 has 16 divisors (see below), whose sum is σ = 4460721408. Its totient is φ = 1424951936.

The previous prime is 2729867851. The next prime is 2729867867. The reversal of 2729867865 is 5687689272.

It is a cyclic number.

It is not a de Polignac number, because 2729867865 - 2¹⁹ = 2729343577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2729867799 and 2729867808.

It is not an unprimeable number, because it can be changed into a prime (2729867867) 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 15 ways as a sum of consecutive naturals, for example, 1935372 + ... + 1936781.

It is an arithmetic number, because the mean of its divisors is an integer number (278795088).

Almost surely, 2^2729867865 is an apocalyptic number.

It is an amenable number.

2729867865 is a deficient number, since it is larger than the sum of its proper divisors (1730853543).

2729867865 is a wasteful number, since it uses less digits than its factorization.

2729867865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3872208.

The product of its digits is 20321280, while the sum is 60.

The square root of 2729867865 is about 52248.1374309171. The cubic root of 2729867865 is about 1397.5924377995.

The spelling of 2729867865 in words is "two billion, seven hundred twenty-nine million, eight hundred sixty-seven thousand, eight hundred sixty-five".