378791784 has 192 divisors, whose sum is σ = 1254839040. Its totient is φ = 100869120.

The previous prime is 378791783. The next prime is 378791801. The reversal of 378791784 is 487197873.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 378791784.

It is not an unprimeable number, because it can be changed into a prime (378791783) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 474874 + ... + 475670.

It is an arithmetic number, because the mean of its divisors is an integer number (6535620).

Almost surely, 2^378791784 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 378791784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (627419520).

378791784 is an abundant number, since it is smaller than the sum of its proper divisors (876047256).

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

378791784 is a wasteful number, since it uses less digits than its factorization.

378791784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880 (or 873 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 54.

The square root of 378791784 is about 19462.5739304954. The cubic root of 378791784 is about 723.5471716348.

The spelling of 378791784 in words is "three hundred seventy-eight million, seven hundred ninety-one thousand, seven hundred eighty-four".