1364421821 has 8 divisors (see below), whose sum is σ = 1597372224. Its totient is φ = 1140979680.

The previous prime is 1364421781. The next prime is 1364421823. The reversal of 1364421821 is 1281244631.

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 1364421821 - 2¹⁸ = 1364159677 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1364421823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2376755 + ... + 2377328.

It is an arithmetic number, because the mean of its divisors is an integer number (199671528).

Almost surely, 2^1364421821 is an apocalyptic number.

It is an amenable number.

1364421821 is a deficient number, since it is larger than the sum of its proper divisors (232950403).

1364421821 is an equidigital number, since it uses as much as digits as its factorization.

1364421821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4754131.

The product of its digits is 9216, while the sum is 32.

The square root of 1364421821 is about 36938.0809057536. The cubic root of 1364421821 is about 1109.1311061288.

The spelling of 1364421821 in words is "one billion, three hundred sixty-four million, four hundred twenty-one thousand, eight hundred twenty-one".