2999061649 has 2 divisors, whose sum is σ = 2999061650. Its totient is φ = 2999061648.

The previous prime is 2999061641. The next prime is 2999061671. The reversal of 2999061649 is 9461609992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1987376400 + 1011685249 = 44580^2 + 31807^2 .

It is a cyclic number.

It is not a de Polignac number, because 2999061649 - 2³ = 2999061641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2999061649.

It is not a weakly prime, because it can be changed into another prime (2999061641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1499530824 + 1499530825.

It is an arithmetic number, because the mean of its divisors is an integer number (1499530825).

Almost surely, 2^2999061649 is an apocalyptic number.

It is an amenable number.

2999061649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2999061649 is an equidigital number, since it uses as much as digits as its factorization.

2999061649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1889568, while the sum is 55.

The square root of 2999061649 is about 54763.6891470982. The cubic root of 2999061649 is about 1442.0991839239.

The spelling of 2999061649 in words is "two billion, nine hundred ninety-nine million, sixty-one thousand, six hundred forty-nine".