1321845753 has 8 divisors (see below), whose sum is σ = 1762988128. Its totient is φ = 880966944.

The previous prime is 1321845731. The next prime is 1321845773. The reversal of 1321845753 is 3575481231.

It is a happy number.

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

It is not a de Polignac number, because 1321845753 - 2¹⁶ = 1321780217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321845773) 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, 53875 + ... + 74472.

It is an arithmetic number, because the mean of its divisors is an integer number (220373516).

Almost surely, 2^1321845753 is an apocalyptic number.

It is an amenable number.

1321845753 is a deficient number, since it is larger than the sum of its proper divisors (441142375).

1321845753 is a wasteful number, since it uses less digits than its factorization.

1321845753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131783.

The product of its digits is 100800, while the sum is 39.

The square root of 1321845753 is about 36357.1967153685. The cubic root of 1321845753 is about 1097.4723651941.

The spelling of 1321845753 in words is "one billion, three hundred twenty-one million, eight hundred forty-five thousand, seven hundred fifty-three".