1338459438 has 16 divisors (see below), whose sum is σ = 2720803536. Its totient is φ = 438839040.

The previous prime is 1338459371. The next prime is 1338459443. The reversal of 1338459438 is 8349548331.

It is a Curzon number.

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, 1828131 + ... + 1828862.

It is an arithmetic number, because the mean of its divisors is an integer number (170050221).

Almost surely, 2^1338459438 is an apocalyptic number.

1338459438 is an abundant number, since it is smaller than the sum of its proper divisors (1382344098).

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

1338459438 is a wasteful number, since it uses less digits than its factorization.

1338459438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3657059.

The product of its digits is 1244160, while the sum is 48.

The square root of 1338459438 is about 36584.9619105993. The cubic root of 1338459438 is about 1102.0511146105.

The spelling of 1338459438 in words is "one billion, three hundred thirty-eight million, four hundred fifty-nine thousand, four hundred thirty-eight".