378506689 has 8 divisors (see below), whose sum is σ = 413276832. Its totient is φ = 343796640.

The previous prime is 378506677. The next prime is 378506693. The reversal of 378506689 is 986605873.

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

It is a de Polignac number, because none of the positive numbers 2^k-378506689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (379506689) 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, 1299 + ... + 27544.

It is an arithmetic number, because the mean of its divisors is an integer number (51659604).

Almost surely, 2^378506689 is an apocalyptic number.

It is an amenable number.

378506689 is a deficient number, since it is larger than the sum of its proper divisors (34770143).

378506689 is a wasteful number, since it uses less digits than its factorization.

378506689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30047.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 378506689 is about 19455.2483664434. The cubic root of 378506689 is about 723.3656018271.

The spelling of 378506689 in words is "three hundred seventy-eight million, five hundred six thousand, six hundred eighty-nine".