378456838 has 8 divisors (see below), whose sum is σ = 575681040. Its totient is φ = 186563160.

The previous prime is 378456817. The next prime is 378456853. The reversal of 378456838 is 838654873.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332453 + ... + 1332736.

It is an arithmetic number, because the mean of its divisors is an integer number (71960130).

Almost surely, 2^378456838 is an apocalyptic number.

378456838 is a deficient number, since it is larger than the sum of its proper divisors (197224202).

378456838 is a wasteful number, since it uses less digits than its factorization.

378456838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665262.

The product of its digits is 3870720, while the sum is 52.

The square root of 378456838 is about 19453.9671532569. The cubic root of 378456838 is about 723.3338436196. Note that the first 3 decimals are identical.

The spelling of 378456838 in words is "three hundred seventy-eight million, four hundred fifty-six thousand, eight hundred thirty-eight".