1448023891 has 2 divisors, whose sum is σ = 1448023892. Its totient is φ = 1448023890.

The previous prime is 1448023883. The next prime is 1448023931. The reversal of 1448023891 is 1983208441.

It is an a-pointer prime, because the next prime (1448023931) can be obtained adding 1448023891 to its sum of digits (40).

It is a weak prime.

It is an emirp because it is prime and its reverse (1983208441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1448023891 - 2³ = 1448023883 is a prime.

It is not a weakly prime, because it can be changed into another prime (1448023391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 724011945 + 724011946.

It is an arithmetic number, because the mean of its divisors is an integer number (724011946).

Almost surely, 2^1448023891 is an apocalyptic number.

1448023891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1448023891 is an equidigital number, since it uses as much as digits as its factorization.

1448023891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 1448023891 is about 38052.9091003566. The cubic root of 1448023891 is about 1131.3367871880.

The spelling of 1448023891 in words is "one billion, four hundred forty-eight million, twenty-three thousand, eight hundred ninety-one".