378220881 has 8 divisors (see below), whose sum is σ = 505648000. Its totient is φ = 251470512.

The previous prime is 378220877. The next prime is 378220907. The reversal of 378220881 is 188022873.

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

It is not a de Polignac number, because 378220881 - 2² = 378220877 is a prime.

It is a super-2 number, since 2×378220881² = 286102069648832322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378227881) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 167881 + ... + 170118.

It is an arithmetic number, because the mean of its divisors is an integer number (63206000).

Almost surely, 2^378220881 is an apocalyptic number.

It is an amenable number.

378220881 is a deficient number, since it is larger than the sum of its proper divisors (127427119).

378220881 is a wasteful number, since it uses less digits than its factorization.

378220881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338375.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 378220881 is about 19447.9017120100. The cubic root of 378220881 is about 723.1834863888.

The spelling of 378220881 in words is "three hundred seventy-eight million, two hundred twenty thousand, eight hundred eighty-one".