378918427 has 2 divisors, whose sum is σ = 378918428. Its totient is φ = 378918426.

The previous prime is 378918403. The next prime is 378918431. The reversal of 378918427 is 724819873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378918427 - 2²⁷ = 244700699 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (378918497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189459213 + 189459214.

It is an arithmetic number, because the mean of its divisors is an integer number (189459214).

Almost surely, 2^378918427 is an apocalyptic number.

378918427 is a deficient number, since it is larger than the sum of its proper divisors (1).

378918427 is an equidigital number, since it uses as much as digits as its factorization.

378918427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 49.

The square root of 378918427 is about 19465.8271594094. The cubic root of 378918427 is about 723.6277981411.

The spelling of 378918427 in words is "three hundred seventy-eight million, nine hundred eighteen thousand, four hundred twenty-seven".