378819 has 18 divisors (see below), whose sum is σ = 637260. Its totient is φ = 216216.

The previous prime is 378817. The next prime is 378821. The reversal of 378819 is 918873.

It is an interprime number because it is at equal distance from previous prime (378817) and next prime (378821).

It is not a de Polignac number, because 378819 - 2¹ = 378817 is a prime.

It is a super-2 number, since 2×378819² = 287007669522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (378817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12 + ... + 870.

2³⁷⁸⁸¹⁹ is an apocalyptic number.

378819 is a deficient number, since it is larger than the sum of its proper divisors (258441).

378819 is a wasteful number, since it uses less digits than its factorization.

378819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 869 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 378819 is about 615.4827373696. The cubic root of 378819 is about 72.3564500054.

The spelling of 378819 in words is "three hundred seventy-eight thousand, eight hundred nineteen".