385089615 has 12 divisors (see below), whose sum is σ = 667488744. Its totient is φ = 205381104.

The previous prime is 385089611. The next prime is 385089643. The reversal of 385089615 is 516980583.

It is not a de Polignac number, because 385089615 - 2² = 385089611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 8557547 = 385089615 / (3 + 8 + 5 + 0 + 8 + 9 + 6 + 1 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385089611) 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 11 ways as a sum of consecutive naturals, for example, 4278729 + ... + 4278818.

It is an arithmetic number, because the mean of its divisors is an integer number (55624062).

Almost surely, 2^385089615 is an apocalyptic number.

385089615 is a deficient number, since it is larger than the sum of its proper divisors (282399129).

385089615 is a wasteful number, since it uses less digits than its factorization.

385089615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8557558 (or 8557555 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 385089615 is about 19623.7003391307. The cubic root of 385089615 is about 727.5350746543.

The spelling of 385089615 in words is "three hundred eighty-five million, eighty-nine thousand, six hundred fifteen".