1329388127946 has 12 divisors (see below), whose sum is σ = 2880340943922. Its totient is φ = 443129375976.

The previous prime is 1329388127927. The next prime is 1329388128001. The reversal of 1329388127946 is 6497218839231.

1329388127946 is a `hidden beast` number, since 1 + 329 + 38 + 8 + 1 + 279 + 4 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1187326226025 + 142061901921 = 1089645^2 + 376911^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 36927447981 + ... + 36927448016.

Almost surely, 2^{1329388127946} is an apocalyptic number.

1329388127946 is an abundant number, since it is smaller than the sum of its proper divisors (1550952815976).

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

1329388127946 is a wasteful number, since it uses less digits than its factorization.

1329388127946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73854896005 (or 73854896002 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The spelling of 1329388127946 in words is "one trillion, three hundred twenty-nine billion, three hundred eighty-eight million, one hundred twenty-seven thousand, nine hundred forty-six".