2149445801 has 2 divisors, whose sum is σ = 2149445802. Its totient is φ = 2149445800.

The previous prime is 2149445789. The next prime is 2149445803. The reversal of 2149445801 is 1085449412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1789205401 + 360240400 = 42299^2 + 18980^2 .

It is a cyclic number.

It is not a de Polignac number, because 2149445801 - 2¹⁴ = 2149429417 is a prime.

Together with 2149445803, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2149445803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074722900 + 1074722901.

It is an arithmetic number, because the mean of its divisors is an integer number (1074722901).

Almost surely, 2^2149445801 is an apocalyptic number.

It is an amenable number.

2149445801 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149445801 is an equidigital number, since it uses as much as digits as its factorization.

2149445801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 2149445801 is about 46362.1160108121. The cubic root of 2149445801 is about 1290.5519743879.

The spelling of 2149445801 in words is "two billion, one hundred forty-nine million, four hundred forty-five thousand, eight hundred one".