387168385 has 8 divisors (see below), whose sum is σ = 465935400. Its totient is φ = 308845824.

The previous prime is 387168367. The next prime is 387168389. The reversal of 387168385 is 583861783.

It can be written as a sum of positive squares in 4 ways, for example, as 4613904 + 382554481 = 2148^2 + 19559^2 .

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 387168385 - 2⁹ = 387167873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387168389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109192 + ... + 112681.

It is an arithmetic number, because the mean of its divisors is an integer number (58241925).

Almost surely, 2^387168385 is an apocalyptic number.

It is an amenable number.

387168385 is a deficient number, since it is larger than the sum of its proper divisors (78767015).

387168385 is a wasteful number, since it uses less digits than its factorization.

387168385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222227.

The product of its digits is 967680, while the sum is 49.

The square root of 387168385 is about 19676.5948527686. The cubic root of 387168385 is about 728.8418396378.

The spelling of 387168385 in words is "three hundred eighty-seven million, one hundred sixty-eight thousand, three hundred eighty-five".