1326563899 has 8 divisors (see below), whose sum is σ = 1339992720. Its totient is φ = 1313158176.

The previous prime is 1326563867. The next prime is 1326563921. The reversal of 1326563899 is 9983656231.

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 1326563899 - 2⁵ = 1326563867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326563599) 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, 124257 + ... + 134509.

It is an arithmetic number, because the mean of its divisors is an integer number (167499090).

Almost surely, 2^1326563899 is an apocalyptic number.

1326563899 is a deficient number, since it is larger than the sum of its proper divisors (13428821).

1326563899 is a wasteful number, since it uses less digits than its factorization.

1326563899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11549.

The product of its digits is 2099520, while the sum is 52.

The square root of 1326563899 is about 36422.0249162509. The cubic root of 1326563899 is about 1098.7765734109.

It can be divided in two parts, 132 and 6563899, that multiplied together give a palindrome (866434668).

The spelling of 1326563899 in words is "one billion, three hundred twenty-six million, five hundred sixty-three thousand, eight hundred ninety-nine".