385646378 has 8 divisors (see below), whose sum is σ = 622967268. Its totient is φ = 177990624.

The previous prime is 385646353. The next prime is 385646399. The reversal of 385646378 is 873646583.

It can be written as a sum of positive squares in 2 ways, for example, as 382867489 + 2778889 = 19567^2 + 1667^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7416251 + ... + 7416302.

Almost surely, 2^385646378 is an apocalyptic number.

385646378 is a deficient number, since it is larger than the sum of its proper divisors (237320890).

385646378 is a wasteful number, since it uses less digits than its factorization.

385646378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14832568.

The product of its digits is 2903040, while the sum is 50.

The square root of 385646378 is about 19637.8811993555. The cubic root of 385646378 is about 727.8855294899.

The spelling of 385646378 in words is "three hundred eighty-five million, six hundred forty-six thousand, three hundred seventy-eight".