378481943 has 4 divisors (see below), whose sum is σ = 432550800. Its totient is φ = 324413088.

The previous prime is 378481937. The next prime is 378481963. The reversal of 378481943 is 349184873.

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 378481943 - 2⁴ = 378481927 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 (378481963) 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, 27034418 + ... + 27034431.

It is an arithmetic number, because the mean of its divisors is an integer number (108137700).

Almost surely, 2^378481943 is an apocalyptic number.

378481943 is a deficient number, since it is larger than the sum of its proper divisors (54068857).

378481943 is an equidigital number, since it uses as much as digits as its factorization.

378481943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54068856.

The product of its digits is 580608, while the sum is 47.

The square root of 378481943 is about 19454.6123836997. The cubic root of 378481943 is about 723.3498374247.

The spelling of 378481943 in words is "three hundred seventy-eight million, four hundred eighty-one thousand, nine hundred forty-three".