2149989166 has 8 divisors (see below), whose sum is σ = 3473059464. Its totient is φ = 992302680.

The previous prime is 2149989157. The next prime is 2149989209. The reversal of 2149989166 is 6619899412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 41345920 + ... + 41345971.

It is an arithmetic number, because the mean of its divisors is an integer number (434132433).

Almost surely, 2^2149989166 is an apocalyptic number.

2149989166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2149989166 is a deficient number, since it is larger than the sum of its proper divisors (1323070298).

2149989166 is a wasteful number, since it uses less digits than its factorization.

2149989166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82691906.

The product of its digits is 1679616, while the sum is 55.

The square root of 2149989166 is about 46367.9756513049. The cubic root of 2149989166 is about 1290.6607127570.

The spelling of 2149989166 in words is "two billion, one hundred forty-nine million, nine hundred eighty-nine thousand, one hundred sixty-six".