378734138 has 8 divisors (see below), whose sum is σ = 581957460. Its totient is φ = 184748320.

The previous prime is 378734117. The next prime is 378734141. The reversal of 378734138 is 831437873.

It can be written as a sum of positive squares in 2 ways, for example, as 326994889 + 51739249 = 18083^2 + 7193^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 2309273 + ... + 2309436.

Almost surely, 2^378734138 is an apocalyptic number.

378734138 is a deficient number, since it is larger than the sum of its proper divisors (203223322).

378734138 is a wasteful number, since it uses less digits than its factorization.

378734138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4618752.

The product of its digits is 338688, while the sum is 44.

The square root of 378734138 is about 19461.0929292268. The cubic root of 378734138 is about 723.5104657029.

The spelling of 378734138 in words is "three hundred seventy-eight million, seven hundred thirty-four thousand, one hundred thirty-eight".