378678271 has 2 divisors, whose sum is σ = 378678272. Its totient is φ = 378678270.

The previous prime is 378678263. The next prime is 378678277. The reversal of 378678271 is 172876873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378678271 - 2³ = 378678263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378678277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189339135 + 189339136.

It is an arithmetic number, because the mean of its divisors is an integer number (189339136).

Almost surely, 2^378678271 is an apocalyptic number.

378678271 is a deficient number, since it is larger than the sum of its proper divisors (1).

378678271 is an equidigital number, since it uses as much as digits as its factorization.

378678271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 49.

The square root of 378678271 is about 19459.6575252495. The cubic root of 378678271 is about 723.4748889903.

The spelling of 378678271 in words is "three hundred seventy-eight million, six hundred seventy-eight thousand, two hundred seventy-one".