1330748861 has 4 divisors (see below), whose sum is σ = 1433114172. Its totient is φ = 1228383552.

The previous prime is 1330748851. The next prime is 1330748863. The reversal of 1330748861 is 1688470331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 406224025 + 924524836 = 20155^2 + 30406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1330748861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330748863) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 51182636 + ... + 51182661.

It is an arithmetic number, because the mean of its divisors is an integer number (358278543).

Almost surely, 2^1330748861 is an apocalyptic number.

It is an amenable number.

1330748861 is a deficient number, since it is larger than the sum of its proper divisors (102365311).

1330748861 is a wasteful number, since it uses less digits than its factorization.

1330748861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102365310.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1330748861 is about 36479.4306561931. The cubic root of 1330748861 is about 1099.9308113507.

The spelling of 1330748861 in words is "one billion, three hundred thirty million, seven hundred forty-eight thousand, eight hundred sixty-one".