378313879 has 2 divisors, whose sum is σ = 378313880. Its totient is φ = 378313878.

The previous prime is 378313877. The next prime is 378313889. The reversal of 378313879 is 978313873.

It is a weak prime.

It is an emirp because it is prime and its reverse (978313873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378313879 - 2¹ = 378313877 is a prime.

Together with 378313877, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378313877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189156939 + 189156940.

It is an arithmetic number, because the mean of its divisors is an integer number (189156940).

Almost surely, 2^378313879 is an apocalyptic number.

378313879 is a deficient number, since it is larger than the sum of its proper divisors (1).

378313879 is an equidigital number, since it uses as much as digits as its factorization.

378313879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 49.

The square root of 378313879 is about 19450.2925170806. The cubic root of 378313879 is about 723.2427543190.

The spelling of 378313879 in words is "three hundred seventy-eight million, three hundred thirteen thousand, eight hundred seventy-nine".