378155966 has 8 divisors (see below), whose sum is σ = 568202040. Its totient is φ = 188755288.

The previous prime is 378155963. The next prime is 378155977. The reversal of 378155966 is 669551873.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378155963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159881 + ... + 162228.

It is an arithmetic number, because the mean of its divisors is an integer number (71025255).

Almost surely, 2^378155966 is an apocalyptic number.

378155966 is a deficient number, since it is larger than the sum of its proper divisors (190046074).

378155966 is a wasteful number, since it uses less digits than its factorization.

378155966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322698.

The product of its digits is 1360800, while the sum is 50.

The square root of 378155966 is about 19446.2326942778. The cubic root of 378155966 is about 723.1421100886.

The spelling of 378155966 in words is "three hundred seventy-eight million, one hundred fifty-five thousand, nine hundred sixty-six".