1327889646 has 16 divisors (see below), whose sum is σ = 2950866000. Its totient is φ = 442629864.

The previous prime is 1327889627. The next prime is 1327889653. The reversal of 1327889646 is 6469887231.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 24590549 = 1327889646 / (1 + 3 + 2 + 7 + 8 + 8 + 9 + 6 + 4 + 6).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1327889592 and 1327889601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12295221 + ... + 12295328.

It is an arithmetic number, because the mean of its divisors is an integer number (184429125).

Almost surely, 2^1327889646 is an apocalyptic number.

1327889646 is an abundant number, since it is smaller than the sum of its proper divisors (1622976354).

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

1327889646 is a wasteful number, since it uses less digits than its factorization.

1327889646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24590560 (or 24590554 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 1327889646 is about 36440.2201694776. The cubic root of 1327889646 is about 1099.1424848579.

The spelling of 1327889646 in words is "one billion, three hundred twenty-seven million, eight hundred eighty-nine thousand, six hundred forty-six".