378455790 has 32 divisors (see below), whose sum is σ = 916790400. Its totient is φ = 99977504.

The previous prime is 378455747. The next prime is 378455827. The reversal of 378455790 is 97554873.

378455790 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 55740 + ... + 62159.

It is an arithmetic number, because the mean of its divisors is an integer number (28649700).

Almost surely, 2^378455790 is an apocalyptic number.

378455790 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

378455790 is an abundant number, since it is smaller than the sum of its proper divisors (538334610).

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

378455790 is a wasteful number, since it uses less digits than its factorization.

378455790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118016.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The square root of 378455790 is about 19453.9402178582. The cubic root of 378455790 is about 723.3331759481. Note that the first 3 decimals are identical.

The spelling of 378455790 in words is "three hundred seventy-eight million, four hundred fifty-five thousand, seven hundred ninety".