1326823801 has 4 divisors (see below), whose sum is σ = 1349312400. Its totient is φ = 1304335204.

The previous prime is 1326823763. The next prime is 1326823819. The reversal of 1326823801 is 1083286231.

It is a happy number.

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 1326823801 - 2¹¹ = 1326821753 is a prime.

It is a super-2 number, since 2×1326823801² = 3520922797800175202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326823891) 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, 11244211 + ... + 11244328.

It is an arithmetic number, because the mean of its divisors is an integer number (337328100).

Almost surely, 2^1326823801 is an apocalyptic number.

It is an amenable number.

1326823801 is a deficient number, since it is larger than the sum of its proper divisors (22488599).

1326823801 is an equidigital number, since it uses as much as digits as its factorization.

1326823801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22488598.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1326823801 is about 36425.5926650480. The cubic root of 1326823801 is about 1098.8483266025.

The spelling of 1326823801 in words is "one billion, three hundred twenty-six million, eight hundred twenty-three thousand, eight hundred one".