1326433636 has 24 divisors (see below), whose sum is σ = 2681241696. Its totient is φ = 567457920.

The previous prime is 1326433631. The next prime is 1326433649. The reversal of 1326433636 is 6363346231.

It is a junction number, because it is equal to n+sod(n) for n = 1326433595 and 1326433604.

It is not an unprimeable number, because it can be changed into a prime (1326433631) 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, 885906 + ... + 887401.

It is an arithmetic number, because the mean of its divisors is an integer number (111718404).

Almost surely, 2^1326433636 is an apocalyptic number.

It is an amenable number.

1326433636 is an abundant number, since it is smaller than the sum of its proper divisors (1354808060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1326433636 is a wasteful number, since it uses less digits than its factorization.

1326433636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773339 (or 1773337 counting only the distinct ones).

The product of its digits is 139968, while the sum is 37.

The square root of 1326433636 is about 36420.2366274575. The cubic root of 1326433636 is about 1098.7406071530.

Adding to 1326433636 its reverse (6363346231), we get a palindrome (7689779867).

The spelling of 1326433636 in words is "one billion, three hundred twenty-six million, four hundred thirty-three thousand, six hundred thirty-six".