1330561461 has 4 divisors (see below), whose sum is σ = 1774081952. Its totient is φ = 887040972.

The previous prime is 1330561439. The next prime is 1330561471. The reversal of 1330561461 is 1641650331.

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 not a de Polignac number, because 1330561461 - 2⁵ = 1330561429 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 (1330561471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221760241 + ... + 221760246.

It is an arithmetic number, because the mean of its divisors is an integer number (443520488).

Almost surely, 2^1330561461 is an apocalyptic number.

It is an amenable number.

1330561461 is a deficient number, since it is larger than the sum of its proper divisors (443520491).

1330561461 is an equidigital number, since it uses as much as digits as its factorization.

1330561461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443520490.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1330561461 is about 36476.8619949688. The cubic root of 1330561461 is about 1099.8791770875.

The spelling of 1330561461 in words is "one billion, three hundred thirty million, five hundred sixty-one thousand, four hundred sixty-one".