1331879163 has 4 divisors (see below), whose sum is σ = 1775838888. Its totient is φ = 887919440.

The previous prime is 1331879149. The next prime is 1331879173. The reversal of 1331879163 is 3619781331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1331879163 - 2¹² = 1331875067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1331879173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221979858 + ... + 221979863.

It is an arithmetic number, because the mean of its divisors is an integer number (443959722).

Almost surely, 2^1331879163 is an apocalyptic number.

1331879163 is a deficient number, since it is larger than the sum of its proper divisors (443959725).

1331879163 is an equidigital number, since it uses as much as digits as its factorization.

1331879163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443959724.

The product of its digits is 81648, while the sum is 42.

The square root of 1331879163 is about 36494.9196875401. The cubic root of 1331879163 is about 1100.2421403582.

The spelling of 1331879163 in words is "one billion, three hundred thirty-one million, eight hundred seventy-nine thousand, one hundred sixty-three".