1329828438 has 16 divisors (see below), whose sum is σ = 2697117696. Its totient is φ = 437032680.

The previous prime is 1329828431. The next prime is 1329828463. The reversal of 1329828438 is 8348289231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329828431) 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, 1560406 + ... + 1561257.

It is an arithmetic number, because the mean of its divisors is an integer number (168569856).

Almost surely, 2^1329828438 is an apocalyptic number.

1329828438 is an abundant number, since it is smaller than the sum of its proper divisors (1367289258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1329828438 is a wasteful number, since it uses less digits than its factorization.

1329828438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121739.

The product of its digits is 663552, while the sum is 48.

The square root of 1329828438 is about 36466.8128302982. The cubic root of 1329828438 is about 1099.6771609066.

The spelling of 1329828438 in words is "one billion, three hundred twenty-nine million, eight hundred twenty-eight thousand, four hundred thirty-eight".