1330438738 has 8 divisors (see below), whose sum is σ = 1996040700. Its totient is φ = 665091840.

The previous prime is 1330438723. The next prime is 1330438783. The reversal of 1330438738 is 8378340331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1049306449 + 281132289 = 32393^2 + 16767^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1330438738.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50143 + ... + 71938.

Almost surely, 2^1330438738 is an apocalyptic number.

1330438738 is a deficient number, since it is larger than the sum of its proper divisors (665601962).

1330438738 is a wasteful number, since it uses less digits than its factorization.

1330438738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127532.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 1330438738 is about 36475.1797528127. The cubic root of 1330438738 is about 1099.8453606308.

The spelling of 1330438738 in words is "one billion, three hundred thirty million, four hundred thirty-eight thousand, seven hundred thirty-eight".