385489515 has 16 divisors (see below), whose sum is σ = 619983648. Its totient is φ = 204527616.

The previous prime is 385489513. The next prime is 385489529. The reversal of 385489515 is 515984583.

It is a happy number.

It is not a de Polignac number, because 385489515 - 2¹ = 385489513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (385489513) 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 15 ways as a sum of consecutive naturals, for example, 63684 + ... + 69473.

It is an arithmetic number, because the mean of its divisors is an integer number (38748978).

Almost surely, 2^385489515 is an apocalyptic number.

385489515 is a deficient number, since it is larger than the sum of its proper divisors (234494133).

385489515 is a wasteful number, since it uses less digits than its factorization.

385489515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133358.

The product of its digits is 864000, while the sum is 48.

The square root of 385489515 is about 19633.8869050425. The cubic root of 385489515 is about 727.7868261192.

The spelling of 385489515 in words is "three hundred eighty-five million, four hundred eighty-nine thousand, five hundred fifteen".