1330551749 has 2 divisors, whose sum is σ = 1330551750. Its totient is φ = 1330551748.

The previous prime is 1330551743. The next prime is 1330551763. The reversal of 1330551749 is 9471550331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1308630625 + 21921124 = 36175^2 + 4682^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1330551749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1330551743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665275874 + 665275875.

It is an arithmetic number, because the mean of its divisors is an integer number (665275875).

Almost surely, 2^1330551749 is an apocalyptic number.

It is an amenable number.

1330551749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330551749 is an equidigital number, since it uses as much as digits as its factorization.

1330551749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 1330551749 is about 36476.7288692394. The cubic root of 1330551749 is about 1099.8765010111.

The spelling of 1330551749 in words is "one billion, three hundred thirty million, five hundred fifty-one thousand, seven hundred forty-nine".