1338871538 has 16 divisors (see below), whose sum is σ = 2124337536. Its totient is φ = 631556640.

The previous prime is 1338871511. The next prime is 1338871543. The reversal of 1338871538 is 8351788331.

It is a junction number, because it is equal to n+sod(n) for n = 1338871492 and 1338871501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195998 + ... + 202713.

It is an arithmetic number, because the mean of its divisors is an integer number (132771096).

Almost surely, 2^1338871538 is an apocalyptic number.

1338871538 is a deficient number, since it is larger than the sum of its proper divisors (785465998).

1338871538 is a wasteful number, since it uses less digits than its factorization.

1338871538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398809.

The product of its digits is 483840, while the sum is 47.

The square root of 1338871538 is about 36590.5935726656. The cubic root of 1338871538 is about 1102.1642069835.

The spelling of 1338871538 in words is "one billion, three hundred thirty-eight million, eight hundred seventy-one thousand, five hundred thirty-eight".