378685427 has 2 divisors, whose sum is σ = 378685428. Its totient is φ = 378685426.

The previous prime is 378685403. The next prime is 378685441. The reversal of 378685427 is 724586873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378685427 - 2¹⁰ = 378684403 is a prime.

It is not a weakly prime, because it can be changed into another prime (378685127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189342713 + 189342714.

It is an arithmetic number, because the mean of its divisors is an integer number (189342714).

Almost surely, 2^378685427 is an apocalyptic number.

378685427 is a deficient number, since it is larger than the sum of its proper divisors (1).

378685427 is an equidigital number, since it uses as much as digits as its factorization.

378685427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 50.

The square root of 378685427 is about 19459.8413919538. The cubic root of 378685427 is about 723.4794462042.

The spelling of 378685427 in words is "three hundred seventy-eight million, six hundred eighty-five thousand, four hundred twenty-seven".