1448350021 has 2 divisors, whose sum is σ = 1448350022. Its totient is φ = 1448350020.

The previous prime is 1448350019. The next prime is 1448350049. The reversal of 1448350021 is 1200538441.

1448350021 = 26910² + 26911².

It is an a-pointer prime, because the next prime (1448350049) can be obtained adding 1448350021 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 724201921 + 724148100 = 26911^2 + 26910^2 .

It is an emirp because it is prime and its reverse (1200538441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1448350021 - 2¹ = 1448350019 is a prime.

Together with 1448350019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1448350081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 724175010 + 724175011.

It is an arithmetic number, because the mean of its divisors is an integer number (724175011).

Almost surely, 2^1448350021 is an apocalyptic number.

1448350021 is the 26911-st centered square number.

It is an amenable number.

1448350021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1448350021 is an equidigital number, since it uses as much as digits as its factorization.

1448350021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1448350021 is about 38057.1940768102. The cubic root of 1448350021 is about 1131.4217156141.

Adding to 1448350021 its reverse (1200538441), we get a palindrome (2648888462).

The spelling of 1448350021 in words is "one billion, four hundred forty-eight million, three hundred fifty thousand, twenty-one".