378765816 has 192 divisors, whose sum is σ = 1144012800. Its totient is φ = 103783680.

The previous prime is 378765791. The next prime is 378765841. The reversal of 378765816 is 618567873.

It is an interprime number because it is at equal distance from previous prime (378765791) and next prime (378765841).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2982345 + ... + 2982471.

It is an arithmetic number, because the mean of its divisors is an integer number (5958400).

Almost surely, 2^378765816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378765816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572006400).

378765816 is an abundant number, since it is smaller than the sum of its proper divisors (765246984).

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

378765816 is a wasteful number, since it uses less digits than its factorization.

378765816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 235 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The square root of 378765816 is about 19461.9067925011. The cubic root of 378765816 is about 723.5306370433.

The spelling of 378765816 in words is "three hundred seventy-eight million, seven hundred sixty-five thousand, eight hundred sixteen".