1328963187 has 8 divisors (see below), whose sum is σ = 1772119440. Its totient is φ = 885891200.

The previous prime is 1328963183. The next prime is 1328963197. The reversal of 1328963187 is 7813698231.

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 1328963187 - 2² = 1328963183 is a prime.

It is a super-2 number, since 2×1328963187² = 3532286304802393938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1328963183) 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 7 ways as a sum of consecutive naturals, for example, 49639 + ... + 71567.

It is an arithmetic number, because the mean of its divisors is an integer number (221514930).

Almost surely, 2^1328963187 is an apocalyptic number.

1328963187 is a deficient number, since it is larger than the sum of its proper divisors (443156253).

1328963187 is a wasteful number, since it uses less digits than its factorization.

1328963187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42133.

The product of its digits is 435456, while the sum is 48.

The square root of 1328963187 is about 36454.9473597206. The cubic root of 1328963187 is about 1099.4386080291.

The spelling of 1328963187 in words is "one billion, three hundred twenty-eight million, nine hundred sixty-three thousand, one hundred eighty-seven".