1321488001 has 8 divisors (see below), whose sum is σ = 1325918880. Its totient is φ = 1317065568.

The previous prime is 1321487989. The next prime is 1321488011. The reversal of 1321488001 is 1008841231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321488001 - 2¹⁹ = 1320963713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321488011) 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 in 7 ways as a sum of consecutive naturals, for example, 467370 + ... + 470188.

It is an arithmetic number, because the mean of its divisors is an integer number (165739860).

Almost surely, 2^1321488001 is an apocalyptic number.

It is an amenable number.

1321488001 is a deficient number, since it is larger than the sum of its proper divisors (4430879).

1321488001 is an equidigital number, since it uses as much as digits as its factorization.

1321488001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1321488001 is about 36352.2764211542. The cubic root of 1321488001 is about 1097.3733474989.

The spelling of 1321488001 in words is "one billion, three hundred twenty-one million, four hundred eighty-eight thousand, one".