378521922 has 32 divisors (see below), whose sum is σ = 777288960. Its totient is φ = 122814080.

The previous prime is 378521921. The next prime is 378521947. The reversal of 378521922 is 229125873.

378521922 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (378521921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123703 + ... + 126725.

It is an arithmetic number, because the mean of its divisors is an integer number (24290280).

Almost surely, 2^378521922 is an apocalyptic number.

378521922 is an abundant number, since it is smaller than the sum of its proper divisors (398767038).

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

378521922 is a wasteful number, since it uses less digits than its factorization.

378521922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578.

The product of its digits is 60480, while the sum is 39.

The square root of 378521922 is about 19455.6398506962. The cubic root of 378521922 is about 723.3753056454.

The spelling of 378521922 in words is "three hundred seventy-eight million, five hundred twenty-one thousand, nine hundred twenty-two".