1330881247 has 4 divisors (see below), whose sum is σ = 1330958560. Its totient is φ = 1330803936.

The previous prime is 1330881241. The next prime is 1330881257. The reversal of 1330881247 is 7421880331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1330881247 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 (1330881241) 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, 154 + ... + 51592.

It is an arithmetic number, because the mean of its divisors is an integer number (332739640).

Almost surely, 2^1330881247 is an apocalyptic number.

1330881247 is a deficient number, since it is larger than the sum of its proper divisors (77313).

1330881247 is an equidigital number, since it uses as much as digits as its factorization.

1330881247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77312.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 1330881247 is about 36481.2451404828. The cubic root of 1330881247 is about 1099.9672847019.

The spelling of 1330881247 in words is "one billion, three hundred thirty million, eight hundred eighty-one thousand, two hundred forty-seven".