1331664327 has 96 divisors (see below), whose sum is σ = 2423001600. Its totient is φ = 719300736.

The previous prime is 1331664317. The next prime is 1331664331. The reversal of 1331664327 is 7234661331.

1331664327 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 6 + 643 + 2 + 7 = 666.

It is not a de Polignac number, because 1331664327 - 2⁷ = 1331664199 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1331664291 and 1331664300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331664317) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3255699 + ... + 3256107.

It is an arithmetic number, because the mean of its divisors is an integer number (25239600).

Almost surely, 2^1331664327 is an apocalyptic number.

1331664327 is a deficient number, since it is larger than the sum of its proper divisors (1091337273).

1331664327 is a wasteful number, since it uses less digits than its factorization.

1331664327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 549 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 1331664327 is about 36491.9762002553. The cubic root of 1331664327 is about 1100.1829797533.

The spelling of 1331664327 in words is "one billion, three hundred thirty-one million, six hundred sixty-four thousand, three hundred twenty-seven".