378086857 has 8 divisors (see below), whose sum is σ = 400083840. Its totient is φ = 356553120.

The previous prime is 378086837. The next prime is 378086861. The reversal of 378086857 is 758680873.

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 378086857 - 2⁷ = 378086729 is a prime.

It is a super-2 number, since 2×378086857² = 285899342872276898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378086827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114132 + ... + 117397.

It is an arithmetic number, because the mean of its divisors is an integer number (50010480).

Almost surely, 2^378086857 is an apocalyptic number.

It is an amenable number.

378086857 is a deficient number, since it is larger than the sum of its proper divisors (21996983).

378086857 is a wasteful number, since it uses less digits than its factorization.

378086857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231623.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The square root of 378086857 is about 19444.4556879333. The cubic root of 378086857 is about 723.0980553623.

The spelling of 378086857 in words is "three hundred seventy-eight million, eighty-six thousand, eight hundred fifty-seven".