378604819 has 4 divisors (see below), whose sum is σ = 380566696. Its totient is φ = 376642944.

The previous prime is 378604799. The next prime is 378604859. The reversal of 378604819 is 918406873.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378604819 - 2⁷ = 378604691 is a prime.

It is a super-2 number, since 2×378604819² = 286683217940045522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378604859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 980649 + ... + 981034.

It is an arithmetic number, because the mean of its divisors is an integer number (95141674).

Almost surely, 2^378604819 is an apocalyptic number.

378604819 is a deficient number, since it is larger than the sum of its proper divisors (1961877).

378604819 is a wasteful number, since it uses less digits than its factorization.

378604819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961876.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 378604819 is about 19457.7701445978. The cubic root of 378604819 is about 723.4281086335.

The spelling of 378604819 in words is "three hundred seventy-eight million, six hundred four thousand, eight hundred nineteen".