378821627 has 2 divisors, whose sum is σ = 378821628. Its totient is φ = 378821626.

The previous prime is 378821621. The next prime is 378821629. The reversal of 378821627 is 726128873.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378821627 - 2⁸ = 378821371 is a prime.

Together with 378821629, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (378821621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189410813 + 189410814.

It is an arithmetic number, because the mean of its divisors is an integer number (189410814).

Almost surely, 2^378821627 is an apocalyptic number.

378821627 is a deficient number, since it is larger than the sum of its proper divisors (1).

378821627 is an equidigital number, since it uses as much as digits as its factorization.

378821627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 44.

The square root of 378821627 is about 19463.3405919950. The cubic root of 378821627 is about 723.5661726200.

The spelling of 378821627 in words is "three hundred seventy-eight million, eight hundred twenty-one thousand, six hundred twenty-seven".