378495919 has 2 divisors, whose sum is σ = 378495920. Its totient is φ = 378495918.

The previous prime is 378495917. The next prime is 378495937. The reversal of 378495919 is 919594873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378495919 - 2¹ = 378495917 is a prime.

It is a super-2 number, since 2×378495919² = 286518321399309122, which contains 22 as substring.

Together with 378495917, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 378495919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378495917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189247959 + 189247960.

It is an arithmetic number, because the mean of its divisors is an integer number (189247960).

Almost surely, 2^378495919 is an apocalyptic number.

378495919 is a deficient number, since it is larger than the sum of its proper divisors (1).

378495919 is an equidigital number, since it uses as much as digits as its factorization.

378495919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 55.

The square root of 378495919 is about 19454.9715754097. The cubic root of 378495919 is about 723.3587408991.

The spelling of 378495919 in words is "three hundred seventy-eight million, four hundred ninety-five thousand, nine hundred nineteen".