385019109 has 32 divisors (see below), whose sum is σ = 592329600. Its totient is φ = 246879360.

The previous prime is 385019099. The next prime is 385019143. The reversal of 385019109 is 901910583.

It is a happy number.

It is not a de Polignac number, because 385019109 - 2²⁷ = 250801381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385019209) 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, 244294 + ... + 245864.

It is an arithmetic number, because the mean of its divisors is an integer number (18510300).

Almost surely, 2^385019109 is an apocalyptic number.

It is an amenable number.

385019109 is a deficient number, since it is larger than the sum of its proper divisors (207310491).

385019109 is a wasteful number, since it uses less digits than its factorization.

385019109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922 (or 1916 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 385019109 is about 19621.9038067156. The cubic root of 385019109 is about 727.4906705149.

The spelling of 385019109 in words is "three hundred eighty-five million, nineteen thousand, one hundred nine".