1321794833 has 4 divisors (see below), whose sum is σ = 1364433408. Its totient is φ = 1279156260.

The previous prime is 1321794779. The next prime is 1321794839. The reversal of 1321794833 is 3384971231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1321794833 - 2²⁰ = 1320746257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1321794839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21319241 + ... + 21319302.

It is an arithmetic number, because the mean of its divisors is an integer number (341108352).

Almost surely, 2^1321794833 is an apocalyptic number.

It is an amenable number.

1321794833 is a deficient number, since it is larger than the sum of its proper divisors (42638575).

1321794833 is an equidigital number, since it uses as much as digits as its factorization.

1321794833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42638574.

The product of its digits is 108864, while the sum is 41.

The square root of 1321794833 is about 36356.4964346126. The cubic root of 1321794833 is about 1097.4582727756.

The spelling of 1321794833 in words is "one billion, three hundred twenty-one million, seven hundred ninety-four thousand, eight hundred thirty-three".