378286819 has 8 divisors (see below), whose sum is σ = 401425920. Its totient is φ = 355705416.

The previous prime is 378286813. The next prime is 378286849. The reversal of 378286819 is 918682873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 378286819 - 2²³ = 369898211 is a prime.

It is a super-2 number, since 2×378286819² = 286201834858277522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378286813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138027 + ... + 140740.

It is an arithmetic number, because the mean of its divisors is an integer number (50178240).

Almost surely, 2^378286819 is an apocalyptic number.

378286819 is a deficient number, since it is larger than the sum of its proper divisors (23139101).

378286819 is a wasteful number, since it uses less digits than its factorization.

378286819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278849.

The product of its digits is 1161216, while the sum is 52.

The square root of 378286819 is about 19449.5968852827. The cubic root of 378286819 is about 723.2255098943.

It can be divided in two parts, 3782 and 86819, that added together give a square (90601 = 301²).

The spelling of 378286819 in words is "three hundred seventy-eight million, two hundred eighty-six thousand, eight hundred nineteen".