2045654449 has 2 divisors, whose sum is σ = 2045654450. Its totient is φ = 2045654448.

The previous prime is 2045654447. The next prime is 2045654453. The reversal of 2045654449 is 9444565402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1669294449 + 376360000 = 40857^2 + 19400^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045654449 - 2¹ = 2045654447 is a prime.

Together with 2045654447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2045654441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022827224 + 1022827225.

It is an arithmetic number, because the mean of its divisors is an integer number (1022827225).

Almost surely, 2^2045654449 is an apocalyptic number.

It is an amenable number.

2045654449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045654449 is an equidigital number, since it uses as much as digits as its factorization.

2045654449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 43.

The square root of 2045654449 is about 45228.9116495190. The cubic root of 2045654449 is about 1269.4358477648.

The spelling of 2045654449 in words is "two billion, forty-five million, six hundred fifty-four thousand, four hundred forty-nine".