378685889 has 8 divisors (see below), whose sum is σ = 381588480. Its totient is φ = 375794496.

The previous prime is 378685883. The next prime is 378685891. The reversal of 378685889 is 988586873.

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 378685889 - 2⁴ = 378685873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378685883) 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, 72632 + ... + 77670.

It is an arithmetic number, because the mean of its divisors is an integer number (47698560).

Almost surely, 2^378685889 is an apocalyptic number.

It is an amenable number.

378685889 is a deficient number, since it is larger than the sum of its proper divisors (2902591).

378685889 is a wasteful number, since it uses less digits than its factorization.

378685889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5599.

The product of its digits is 23224320, while the sum is 62.

The square root of 378685889 is about 19459.8532625506. The cubic root of 378685889 is about 723.4797404215.

The spelling of 378685889 in words is "three hundred seventy-eight million, six hundred eighty-five thousand, eight hundred eighty-nine".