378480491 has 2 divisors, whose sum is σ = 378480492. Its totient is φ = 378480490.

The previous prime is 378480463. The next prime is 378480493. The reversal of 378480491 is 194084873.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378480491 is a prime.

Together with 378480493, 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 (378480493) 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, 189240245 + 189240246.

It is an arithmetic number, because the mean of its divisors is an integer number (189240246).

Almost surely, 2^378480491 is an apocalyptic number.

378480491 is a deficient number, since it is larger than the sum of its proper divisors (1).

378480491 is an equidigital number, since it uses as much as digits as its factorization.

378480491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 378480491 is about 19454.5750660352. The cubic root of 378480491 is about 723.3489124089.

The spelling of 378480491 in words is "three hundred seventy-eight million, four hundred eighty thousand, four hundred ninety-one".