1326009156 has 48 divisors (see below), whose sum is σ = 3236865408. Its totient is φ = 421696000.

The previous prime is 1326009149. The next prime is 1326009161. The reversal of 1326009156 is 6519006231.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104686 + ... + 116666.

It is an arithmetic number, because the mean of its divisors is an integer number (67434696).

Almost surely, 2^1326009156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1326009156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1618432704).

1326009156 is an abundant number, since it is smaller than the sum of its proper divisors (1910856252).

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

1326009156 is a wasteful number, since it uses less digits than its factorization.

1326009156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12412 (or 12410 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 1326009156 is about 36414.4086317491. The cubic root of 1326009156 is about 1098.6233897865.

The spelling of 1326009156 in words is "one billion, three hundred twenty-six million, nine thousand, one hundred fifty-six".