378531827 has 2 divisors, whose sum is σ = 378531828. Its totient is φ = 378531826.

The previous prime is 378531823. The next prime is 378531841. The reversal of 378531827 is 728135873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378531827 - 2² = 378531823 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (378531823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189265913 + 189265914.

It is an arithmetic number, because the mean of its divisors is an integer number (189265914).

Almost surely, 2^378531827 is an apocalyptic number.

378531827 is a deficient number, since it is larger than the sum of its proper divisors (1).

378531827 is an equidigital number, since it uses as much as digits as its factorization.

378531827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 44.

The square root of 378531827 is about 19455.8944024684. The cubic root of 378531827 is about 723.3816152490.

The spelling of 378531827 in words is "three hundred seventy-eight million, five hundred thirty-one thousand, eight hundred twenty-seven".