1378138432 has 28 divisors (see below), whose sum is σ = 2983358016. Its totient is φ = 626426240.

The previous prime is 1378138417. The next prime is 1378138451. The reversal of 1378138432 is 2348318731.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 978088 + ... + 979495.

Almost surely, 2^1378138432 is an apocalyptic number.

It is an amenable number.

1378138432 is an abundant number, since it is smaller than the sum of its proper divisors (1605219584).

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

1378138432 is a wasteful number, since it uses less digits than its factorization.

1378138432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957606 (or 1957596 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 1378138432 is about 37123.2869234393. The cubic root of 1378138432 is about 1112.8354400173.

The spelling of 1378138432 in words is "one billion, three hundred seventy-eight million, one hundred thirty-eight thousand, four hundred thirty-two".