385671815 has 8 divisors (see below), whose sum is σ = 463076448. Its totient is φ = 308357280.

The previous prime is 385671761. The next prime is 385671817. The reversal of 385671815 is 518176583.

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

It is not a de Polignac number, because 385671815 - 2¹⁸ = 385409671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385671817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12716 + ... + 30545.

It is an arithmetic number, because the mean of its divisors is an integer number (57884556).

Almost surely, 2^385671815 is an apocalyptic number.

385671815 is a deficient number, since it is larger than the sum of its proper divisors (77404633).

385671815 is a wasteful number, since it uses less digits than its factorization.

385671815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45049.

The product of its digits is 201600, while the sum is 44.

The square root of 385671815 is about 19638.5288400124. The cubic root of 385671815 is about 727.9015327666.

The spelling of 385671815 in words is "three hundred eighty-five million, six hundred seventy-one thousand, eight hundred fifteen".