381146678 has 8 divisors (see below), whose sum is σ = 623694600. Its totient is φ = 173248480.

The previous prime is 381146611. The next prime is 381146713. The reversal of 381146678 is 876641183.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8662403 + ... + 8662446.

It is an arithmetic number, because the mean of its divisors is an integer number (77961825).

Almost surely, 2^381146678 is an apocalyptic number.

381146678 is a deficient number, since it is larger than the sum of its proper divisors (242547922).

381146678 is a wasteful number, since it uses less digits than its factorization.

381146678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17324862.

The product of its digits is 193536, while the sum is 44.

The square root of 381146678 is about 19522.9782051817. The cubic root of 381146678 is about 725.0434713530.

The spelling of 381146678 in words is "three hundred eighty-one million, one hundred forty-six thousand, six hundred seventy-eight".