1326955380 has 48 divisors (see below), whose sum is σ = 3717901824. Its totient is φ = 353623680.

The previous prime is 1326955367. The next prime is 1326955381. The reversal of 1326955380 is 835596231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326955381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98109 + ... + 110811.

It is an arithmetic number, because the mean of its divisors is an integer number (77456288).

Almost surely, 2^1326955380 is an apocalyptic number.

1326955380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1326955380 is an abundant number, since it is smaller than the sum of its proper divisors (2390946444).

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

1326955380 is a wasteful number, since it uses less digits than its factorization.

1326955380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14456 (or 14454 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 1326955380 is about 36427.3987542344. The cubic root of 1326955380 is about 1098.8846490805.

It can be divided in two parts, 132695 and 5380, that added together give a triangular number (138075 = T₅₂₅).

The spelling of 1326955380 in words is "one billion, three hundred twenty-six million, nine hundred fifty-five thousand, three hundred eighty".