1338491904 has 88 divisors (see below), whose sum is σ = 3654926688. Its totient is φ = 435240960.

The previous prime is 1338491873. The next prime is 1338491911. The reversal of 1338491904 is 4091948331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120639 + ... + 131265.

Almost surely, 2^1338491904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1338491904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1827463344).

1338491904 is an abundant number, since it is smaller than the sum of its proper divisors (2316434784).

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

1338491904 is a wasteful number, since it uses less digits than its factorization.

1338491904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10691 (or 10673 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 1338491904 is about 36585.4056148077. The cubic root of 1338491904 is about 1102.0600250790.

The spelling of 1338491904 in words is "one billion, three hundred thirty-eight million, four hundred ninety-one thousand, nine hundred four".