2890445814649 has 2 divisors, whose sum is σ = 2890445814650. Its totient is φ = 2890445814648.

The previous prime is 2890445814547. The next prime is 2890445814677. The reversal of 2890445814649 is 9464185440982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2882973076624 + 7472738025 = 1697932^2 + 86445^2 .

It is a cyclic number.

It is not a de Polignac number, because 2890445814649 - 2³⁵ = 2856086076281 is a prime.

It is not a weakly prime, because it can be changed into another prime (2890445814049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445222907324 + 1445222907325.

It is an arithmetic number, because the mean of its divisors is an integer number (1445222907325).

Almost surely, 2^{2890445814649} is an apocalyptic number.

It is an amenable number.

2890445814649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2890445814649 is an equidigital number, since it uses as much as digits as its factorization.

2890445814649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79626240, while the sum is 64.

The spelling of 2890445814649 in words is "two trillion, eight hundred ninety billion, four hundred forty-five million, eight hundred fourteen thousand, six hundred forty-nine".