2149171208 has 16 divisors (see below), whose sum is σ = 4168651500. Its totient is φ = 1037530816.

The previous prime is 2149171201. The next prime is 2149171247. The reversal of 2149171208 is 8021719412.

It can be written as a sum of positive squares in 2 ways, for example, as 1904624164 + 244547044 = 43642^2 + 15638^2 .

It is not an unprimeable number, because it can be changed into a prime (2149171201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4631603 + ... + 4632066.

Almost surely, 2^2149171208 is an apocalyptic number.

It is an amenable number.

2149171208 is a deficient number, since it is larger than the sum of its proper divisors (2019480292).

2149171208 is a wasteful number, since it uses less digits than its factorization.

2149171208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9263704 (or 9263700 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 2149171208 is about 46359.1545220575. The cubic root of 2149171208 is about 1290.4970157826.

The spelling of 2149171208 in words is "two billion, one hundred forty-nine million, one hundred seventy-one thousand, two hundred eight".