1326398336 has 16 divisors (see below), whose sum is σ = 2642434440. Its totient is φ = 663199104.

The previous prime is 1326398321. The next prime is 1326398347. The reversal of 1326398336 is 6338936231.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5181116 + ... + 5181371.

Almost surely, 2^1326398336 is an apocalyptic number.

1326398336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1326398336 is a deficient number, since it is larger than the sum of its proper divisors (1316036104).

1326398336 is an equidigital number, since it uses as much as digits as its factorization.

1326398336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10362501 (or 10362489 counting only the distinct ones).

The product of its digits is 419904, while the sum is 44.

The square root of 1326398336 is about 36419.7520035488. The cubic root of 1326398336 is about 1098.7308602431.

The spelling of 1326398336 in words is "one billion, three hundred twenty-six million, three hundred ninety-eight thousand, three hundred thirty-six".