1330805851 has 4 divisors (see below), whose sum is σ = 1373735104. Its totient is φ = 1287876600.

The previous prime is 1330805843. The next prime is 1330805857. The reversal of 1330805851 is 1585080331.

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 1330805851 - 2³ = 1330805843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1330805857) 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, 21464580 + ... + 21464641.

It is an arithmetic number, because the mean of its divisors is an integer number (343433776).

Almost surely, 2^1330805851 is an apocalyptic number.

1330805851 is a deficient number, since it is larger than the sum of its proper divisors (42929253).

1330805851 is an equidigital number, since it uses as much as digits as its factorization.

1330805851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42929252.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 1330805851 is about 36480.2117729599. The cubic root of 1330805851 is about 1099.9465128262.

The spelling of 1330805851 in words is "one billion, three hundred thirty million, eight hundred five thousand, eight hundred fifty-one".