1321458448 has 40 divisors (see below), whose sum is σ = 2590290560. Its totient is φ = 653028480.

The previous prime is 1321458443. The next prime is 1321458497. The reversal of 1321458448 is 8448541231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321458448.

It is not an unprimeable number, because it can be changed into a prime (1321458443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995161 + ... + 996487.

It is an arithmetic number, because the mean of its divisors is an integer number (64757264).

Almost surely, 2^1321458448 is an apocalyptic number.

It is an amenable number.

1321458448 is a deficient number, since it is larger than the sum of its proper divisors (1268832112).

1321458448 is a wasteful number, since it uses less digits than its factorization.

1321458448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015 (or 2009 counting only the distinct ones).

The product of its digits is 122880, while the sum is 40.

The square root of 1321458448 is about 36351.8699381476. The cubic root of 1321458448 is about 1097.3651670951.

Adding to 1321458448 its reverse (8448541231), we get a palindrome (9769999679).

The spelling of 1321458448 in words is "one billion, three hundred twenty-one million, four hundred fifty-eight thousand, four hundred forty-eight".