378237881 has 8 divisors (see below), whose sum is σ = 439358784. Its totient is φ = 318888720.

The previous prime is 378237817. The next prime is 378237901. The reversal of 378237881 is 188732873.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 378237881 - 2⁶ = 378237817 is a prime.

It is a super-2 number, since 2×378237881² = 286127789246740322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378237481) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 442475 + ... + 443328.

It is an arithmetic number, because the mean of its divisors is an integer number (54919848).

Almost surely, 2^378237881 is an apocalyptic number.

It is an amenable number.

378237881 is a deficient number, since it is larger than the sum of its proper divisors (61120903).

378237881 is an equidigital number, since it uses as much as digits as its factorization.

378237881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885871.

The product of its digits is 451584, while the sum is 47.

The square root of 378237881 is about 19448.3387722448. The cubic root of 378237881 is about 723.1943212701.

The spelling of 378237881 in words is "three hundred seventy-eight million, two hundred thirty-seven thousand, eight hundred eighty-one".