1321828933 has 4 divisors (see below), whose sum is σ = 1364468608. Its totient is φ = 1279189260.

The previous prime is 1321828877. The next prime is 1321828951. The reversal of 1321828933 is 3398281231.

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 1321828933 - 2²⁹ = 784958021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321828133) 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 3 ways as a sum of consecutive naturals, for example, 21319791 + ... + 21319852.

It is an arithmetic number, because the mean of its divisors is an integer number (341117152).

Almost surely, 2^1321828933 is an apocalyptic number.

It is an amenable number.

1321828933 is a deficient number, since it is larger than the sum of its proper divisors (42639675).

1321828933 is an equidigital number, since it uses as much as digits as its factorization.

1321828933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42639674.

The product of its digits is 62208, while the sum is 40.

The square root of 1321828933 is about 36356.9653986688. The cubic root of 1321828933 is about 1097.4677101972.

The spelling of 1321828933 in words is "one billion, three hundred twenty-one million, eight hundred twenty-eight thousand, nine hundred thirty-three".