1330138849 has 8 divisors (see below), whose sum is σ = 1433715752. Its totient is φ = 1226741760.

The previous prime is 1330138841. The next prime is 1330138861. The reversal of 1330138849 is 9488310331.

It can be written as a sum of positive squares in 4 ways, for example, as 53363025 + 1276775824 = 7305^2 + 35732^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1330138849 - 2³ = 1330138841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1330138841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29382 + ... + 59359.

It is an arithmetic number, because the mean of its divisors is an integer number (179214469).

Almost surely, 2^1330138849 is an apocalyptic number.

It is an amenable number.

1330138849 is a deficient number, since it is larger than the sum of its proper divisors (103576903).

1330138849 is a wasteful number, since it uses less digits than its factorization.

1330138849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89907.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1330138849 is about 36471.0686572247. The cubic root of 1330138849 is about 1099.7627171386.

The spelling of 1330138849 in words is "one billion, three hundred thirty million, one hundred thirty-eight thousand, eight hundred forty-nine".