1326878387 has 8 divisors (see below), whose sum is σ = 1330533600. Its totient is φ = 1323229824.

The previous prime is 1326878323. The next prime is 1326878389. The reversal of 1326878387 is 7838786231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1326878387 - 2⁶ = 1326878323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326878389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005314 + ... + 1006632.

It is an arithmetic number, because the mean of its divisors is an integer number (166316700).

Almost surely, 2^1326878387 is an apocalyptic number.

1326878387 is a deficient number, since it is larger than the sum of its proper divisors (3655213).

1326878387 is a wasteful number, since it uses less digits than its factorization.

1326878387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325.

The product of its digits is 2709504, while the sum is 53.

The square root of 1326878387 is about 36426.3419382183. The cubic root of 1326878387 is about 1098.8633953987.

The spelling of 1326878387 in words is "one billion, three hundred twenty-six million, eight hundred seventy-eight thousand, three hundred eighty-seven".