2149009385 has 4 divisors (see below), whose sum is σ = 2578811268. Its totient is φ = 1719207504.

The previous prime is 2149009349. The next prime is 2149009399. The reversal of 2149009385 is 5839009412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 700978576 + 1448030809 = 26476^2 + 38053^2 .

It is a cyclic number.

It is not a de Polignac number, because 2149009385 - 2¹⁸ = 2148747241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214900934 + ... + 214900943.

It is an arithmetic number, because the mean of its divisors is an integer number (644702817).

Almost surely, 2^2149009385 is an apocalyptic number.

It is an amenable number.

2149009385 is a deficient number, since it is larger than the sum of its proper divisors (429801883).

2149009385 is an equidigital number, since it uses as much as digits as its factorization.

2149009385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429801882.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 2149009385 is about 46357.4091704875. The cubic root of 2149009385 is about 1290.4646254145.

The spelling of 2149009385 in words is "two billion, one hundred forty-nine million, nine thousand, three hundred eighty-five".