1331744507 has 2 divisors, whose sum is σ = 1331744508. Its totient is φ = 1331744506.

The previous prime is 1331744429. The next prime is 1331744509. The reversal of 1331744507 is 7054471331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1331744507 - 2¹⁸ = 1331482363 is a prime.

Together with 1331744509, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1331744509) 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 as a sum of consecutive naturals, namely, 665872253 + 665872254.

It is an arithmetic number, because the mean of its divisors is an integer number (665872254).

Almost surely, 2^1331744507 is an apocalyptic number.

1331744507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331744507 is an equidigital number, since it uses as much as digits as its factorization.

1331744507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 1331744507 is about 36493.0747813883. The cubic root of 1331744507 is about 1100.2050601178.

The spelling of 1331744507 in words is "one billion, three hundred thirty-one million, seven hundred forty-four thousand, five hundred seven".