1338233921 has 8 divisors (see below), whose sum is σ = 1360776000. Its totient is φ = 1315711440.

The previous prime is 1338233903. The next prime is 1338233957. The reversal of 1338233921 is 1293328331.

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

It is not a de Polignac number, because 1338233921 - 2¹⁴ = 1338217537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338223921) 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, 212780 + ... + 218978.

It is an arithmetic number, because the mean of its divisors is an integer number (170097000).

Almost surely, 2^1338233921 is an apocalyptic number.

It is an amenable number.

1338233921 is a deficient number, since it is larger than the sum of its proper divisors (22542079).

1338233921 is an equidigital number, since it uses as much as digits as its factorization.

1338233921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9799.

The product of its digits is 23328, while the sum is 35.

The square root of 1338233921 is about 36581.8796810661. The cubic root of 1338233921 is about 1101.9892162783.

The spelling of 1338233921 in words is "one billion, three hundred thirty-eight million, two hundred thirty-three thousand, nine hundred twenty-one".