2865102649 has 2 divisors, whose sum is σ = 2865102650. Its totient is φ = 2865102648.

The previous prime is 2865102607. The next prime is 2865102707. The reversal of 2865102649 is 9462015682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1624654249 + 1240448400 = 40307^2 + 35220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2865102649 - 2⁹ = 2865102137 is a prime.

It is not a weakly prime, because it can be changed into another prime (2865102749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1432551324 + 1432551325.

It is an arithmetic number, because the mean of its divisors is an integer number (1432551325).

Almost surely, 2^2865102649 is an apocalyptic number.

It is an amenable number.

2865102649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2865102649 is an equidigital number, since it uses as much as digits as its factorization.

2865102649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 2865102649 is about 53526.6536316254. The cubic root of 2865102649 is about 1420.2999183002.

The spelling of 2865102649 in words is "two billion, eight hundred sixty-five million, one hundred two thousand, six hundred forty-nine".