1338829460 has 24 divisors (see below), whose sum is σ = 2887531080. Its totient is φ = 521057664.

The previous prime is 1338829439. The next prime is 1338829477. The reversal of 1338829460 is 649288331.

It can be written as a sum of positive squares in 4 ways, for example, as 260757904 + 1078071556 = 16148^2 + 32834^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 903875 + ... + 905354.

It is an arithmetic number, because the mean of its divisors is an integer number (120313795).

Almost surely, 2^1338829460 is an apocalyptic number.

1338829460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1338829460 is an abundant number, since it is smaller than the sum of its proper divisors (1548701620).

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

1338829460 is a wasteful number, since it uses less digits than its factorization.

1338829460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809275 (or 1809273 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 1338829460 is about 36590.0185843079. The cubic root of 1338829460 is about 1102.1526606053.

The spelling of 1338829460 in words is "one billion, three hundred thirty-eight million, eight hundred twenty-nine thousand, four hundred sixty".