378146918 has 4 divisors (see below), whose sum is σ = 567220380. Its totient is φ = 189073458.

The previous prime is 378146917. The next prime is 378146927. The reversal of 378146918 is 819641873.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378146917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94536728 + ... + 94536731.

It is an arithmetic number, because the mean of its divisors is an integer number (141805095).

Almost surely, 2^378146918 is an apocalyptic number.

378146918 is a deficient number, since it is larger than the sum of its proper divisors (189073462).

378146918 is a wasteful number, since it uses less digits than its factorization.

378146918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189073461.

The product of its digits is 290304, while the sum is 47.

The square root of 378146918 is about 19446.0000514245. Note that the first 4 decimals coincide. The cubic root of 378146918 is about 723.1363425901.

The spelling of 378146918 in words is "three hundred seventy-eight million, one hundred forty-six thousand, nine hundred eighteen".