1326065140 has 24 divisors (see below), whose sum is σ = 2785538952. Its totient is φ = 530273280.

The previous prime is 1326065137. The next prime is 1326065149. The reversal of 1326065140 is 415606231.

It can be written as a sum of positive squares in 4 ways, for example, as 13162384 + 1312902756 = 3628^2 + 36234^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1326065099 and 1326065108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326065149) 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, 83952 + ... + 98488.

It is an arithmetic number, because the mean of its divisors is an integer number (116064123).

Almost surely, 2^1326065140 is an apocalyptic number.

1326065140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1326065140 is an abundant number, since it is smaller than the sum of its proper divisors (1459473812).

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

1326065140 is a wasteful number, since it uses less digits than its factorization.

1326065140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19107 (or 19105 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1326065140 is about 36415.1773303385. The cubic root of 1326065140 is about 1098.6388508327.

It can be divided in two parts, 13260 and 65140, that added together give a square (78400 = 280²).

The spelling of 1326065140 in words is "one billion, three hundred twenty-six million, sixty-five thousand, one hundred forty".