385309645 has 32 divisors (see below), whose sum is σ = 560609280. Its totient is φ = 248339520.

The previous prime is 385309643. The next prime is 385309649. The reversal of 385309645 is 546903583.

It is not a de Polignac number, because 385309645 - 2¹ = 385309643 is a prime.

It is a super-3 number, since 3×385309645³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385309643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84904 + ... + 89326.

It is an arithmetic number, because the mean of its divisors is an integer number (17519040).

Almost surely, 2^385309645 is an apocalyptic number.

385309645 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

385309645 is a deficient number, since it is larger than the sum of its proper divisors (175299635).

385309645 is a wasteful number, since it uses less digits than its factorization.

385309645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4585.

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 385309645 is about 19629.3057696904. The cubic root of 385309645 is about 727.6736130252.

The spelling of 385309645 in words is "three hundred eighty-five million, three hundred nine thousand, six hundred forty-five".