378789876 has 18 divisors (see below), whose sum is σ = 957496722. Its totient is φ = 126263280.

The previous prime is 378789841. The next prime is 378789877. The reversal of 378789876 is 678987873.

It can be written as a sum of positive squares in only one way, i.e., 253573776 + 125216100 = 15924^2 + 11190^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378789877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5260935 + ... + 5261006.

Almost surely, 2^378789876 is an apocalyptic number.

378789876 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

378789876 is an abundant number, since it is smaller than the sum of its proper divisors (578706846).

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

378789876 is a wasteful number, since it uses less digits than its factorization.

378789876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10521951 (or 10521946 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The square root of 378789876 is about 19462.5249132789. The cubic root of 378789876 is about 723.5459567807.

The spelling of 378789876 in words is "three hundred seventy-eight million, seven hundred eighty-nine thousand, eight hundred seventy-six".