1338955904 has 192 divisors, whose sum is σ = 3346440480. Its totient is φ = 527155200.

The previous prime is 1338955903. The next prime is 1338955927. The reversal of 1338955904 is 4095598331.

It is not an unprimeable number, because it can be changed into a prime (1338955903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4045019 + ... + 4045349.

Almost surely, 2^1338955904 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 1338955904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1673220240).

1338955904 is an abundant number, since it is smaller than the sum of its proper divisors (2007484576).

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

1338955904 is a wasteful number, since it uses less digits than its factorization.

1338955904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 47.

The square root of 1338955904 is about 36591.7463917753. The cubic root of 1338955904 is about 1102.1873566360.

The spelling of 1338955904 in words is "one billion, three hundred thirty-eight million, nine hundred fifty-five thousand, nine hundred four".