1330944191 has 2 divisors, whose sum is σ = 1330944192. Its totient is φ = 1330944190.

The previous prime is 1330944179. The next prime is 1330944193. The reversal of 1330944191 is 1914490331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1330944191 - 2²⁶ = 1263835327 is a prime.

Together with 1330944193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1330944193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665472095 + 665472096.

It is an arithmetic number, because the mean of its divisors is an integer number (665472096).

Almost surely, 2^1330944191 is an apocalyptic number.

1330944191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330944191 is an equidigital number, since it uses as much as digits as its factorization.

1330944191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 1330944191 is about 36482.1078201356. The cubic root of 1330944191 is about 1099.9846254049.

The spelling of 1330944191 in words is "one billion, three hundred thirty million, nine hundred forty-four thousand, one hundred ninety-one".