1326165320 has 16 divisors (see below), whose sum is σ = 2983872060. Its totient is φ = 530466112.

The previous prime is 1326165307. The next prime is 1326165353. The reversal of 1326165320 is 235616231.

It can be written as a sum of positive squares in 2 ways, for example, as 1323649924 + 2515396 = 36382^2 + 1586^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16577027 + ... + 16577106.

Almost surely, 2^1326165320 is an apocalyptic number.

1326165320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1326165320 is an abundant number, since it is smaller than the sum of its proper divisors (1657706740).

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

1326165320 is a wasteful number, since it uses less digits than its factorization.

1326165320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33154144 (or 33154140 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1326165320 is about 36416.5528297229. The cubic root of 1326165320 is about 1098.6665163586. Note that the first 3 decimals are identical.

The spelling of 1326165320 in words is "one billion, three hundred twenty-six million, one hundred sixty-five thousand, three hundred twenty".