1330877813 has 4 divisors (see below), whose sum is σ = 1331517600. Its totient is φ = 1330238028.

The previous prime is 1330877797. The next prime is 1330877851. The reversal of 1330877813 is 3187780331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1330877813 - 2⁴ = 1330877797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330877413) 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, 316763 + ... + 320936.

It is an arithmetic number, because the mean of its divisors is an integer number (332879400).

Almost surely, 2^1330877813 is an apocalyptic number.

It is an amenable number.

1330877813 is a deficient number, since it is larger than the sum of its proper divisors (639787).

1330877813 is an equidigital number, since it uses as much as digits as its factorization.

1330877813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639786.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 1330877813 is about 36481.1980751729. The cubic root of 1330877813 is about 1099.9663386394.

The spelling of 1330877813 in words is "one billion, three hundred thirty million, eight hundred seventy-seven thousand, eight hundred thirteen".