378629941 has 4 divisors (see below), whose sum is σ = 382884300. Its totient is φ = 374375584.

The previous prime is 378629869. The next prime is 378629959. The reversal of 378629941 is 149926873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 149926873 = 41 ⋅3656753.

It can be written as a sum of positive squares in 2 ways, for example, as 83649316 + 294980625 = 9146^2 + 17175^2 .

It is a cyclic number.

It is not a de Polignac number, because 378629941 - 2⁹ = 378629429 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378629341) 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, 2127046 + ... + 2127223.

It is an arithmetic number, because the mean of its divisors is an integer number (95721075).

Almost surely, 2^378629941 is an apocalyptic number.

It is an amenable number.

378629941 is a deficient number, since it is larger than the sum of its proper divisors (4254359).

378629941 is an equidigital number, since it uses as much as digits as its factorization.

378629941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4254358.

The product of its digits is 653184, while the sum is 49.

The square root of 378629941 is about 19458.4156857643. The cubic root of 378629941 is about 723.4441090981. Note that the first 3 decimals are identical.

The spelling of 378629941 in words is "three hundred seventy-eight million, six hundred twenty-nine thousand, nine hundred forty-one".