378491171 has 2 divisors, whose sum is σ = 378491172. Its totient is φ = 378491170.

The previous prime is 378491161. The next prime is 378491221. The reversal of 378491171 is 171194873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378491171 - 2¹⁴ = 378474787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (378491161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189245585 + 189245586.

It is an arithmetic number, because the mean of its divisors is an integer number (189245586).

Almost surely, 2^378491171 is an apocalyptic number.

378491171 is a deficient number, since it is larger than the sum of its proper divisors (1).

378491171 is an equidigital number, since it uses as much as digits as its factorization.

378491171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 41.

The square root of 378491171 is about 19454.8495496624. The cubic root of 378491171 is about 723.3557161886.

The spelling of 378491171 in words is "three hundred seventy-eight million, four hundred ninety-one thousand, one hundred seventy-one".