378914491 has 2 divisors, whose sum is σ = 378914492. Its totient is φ = 378914490.

The previous prime is 378914467. The next prime is 378914531. The reversal of 378914491 is 194419873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378914491 - 2⁷ = 378914363 is a prime.

It is not a weakly prime, because it can be changed into another prime (378914441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189457245 + 189457246.

It is an arithmetic number, because the mean of its divisors is an integer number (189457246).

Almost surely, 2^378914491 is an apocalyptic number.

378914491 is a deficient number, since it is larger than the sum of its proper divisors (1).

378914491 is an equidigital number, since it uses as much as digits as its factorization.

378914491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 378914491 is about 19465.7260588964. The cubic root of 378914491 is about 723.6252925808.

The spelling of 378914491 in words is "three hundred seventy-eight million, nine hundred fourteen thousand, four hundred ninety-one".