378166463 has 4 divisors (see below), whose sum is σ = 378790080. Its totient is φ = 377542848.

The previous prime is 378166441. The next prime is 378166469. The reversal of 378166463 is 364661873.

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

It is a cyclic number.

It is not a de Polignac number, because 378166463 - 2²⁸ = 109731007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378166469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310898 + ... + 312111.

It is an arithmetic number, because the mean of its divisors is an integer number (94697520).

Almost surely, 2^378166463 is an apocalyptic number.

378166463 is a deficient number, since it is larger than the sum of its proper divisors (623617).

378166463 is an equidigital number, since it uses as much as digits as its factorization.

378166463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623616.

The product of its digits is 435456, while the sum is 44.

The square root of 378166463 is about 19446.5025904403. The cubic root of 378166463 is about 723.1488011131.

The spelling of 378166463 in words is "three hundred seventy-eight million, one hundred sixty-six thousand, four hundred sixty-three".