378655590 has 32 divisors (see below), whose sum is σ = 913545216. Its totient is φ = 100444640.

The previous prime is 378655531. The next prime is 378655591. The reversal of 378655590 is 95556873.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378655591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27312 + ... + 38771.

It is an arithmetic number, because the mean of its divisors is an integer number (28548288).

Almost surely, 2^378655590 is an apocalyptic number.

378655590 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

378655590 is an abundant number, since it is smaller than the sum of its proper divisors (534889626).

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

378655590 is a wasteful number, since it uses less digits than its factorization.

378655590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66284.

The product of its (nonzero) digits is 1134000, while the sum is 48.

The square root of 378655590 is about 19459.0747467602. The cubic root of 378655590 is about 723.4604444844.

The spelling of 378655590 in words is "three hundred seventy-eight million, six hundred fifty-five thousand, five hundred ninety".