2127191450 has 12 divisors (see below), whose sum is σ = 3956576190. Its totient is φ = 850876560.

The previous prime is 2127191447. The next prime is 2127191489. The reversal of 2127191450 is 541917212.

It can be written as a sum of positive squares in 3 ways, for example, as 1301261329 + 825930121 = 36073^2 + 28739^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21271865 + ... + 21271964.

Almost surely, 2^2127191450 is an apocalyptic number.

2127191450 is a deficient number, since it is larger than the sum of its proper divisors (1829384740).

2127191450 is a wasteful number, since it uses less digits than its factorization.

2127191450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42543841 (or 42543836 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 2127191450 is about 46121.4857739861. The cubic root of 2127191450 is about 1286.0825913399.

The spelling of 2127191450 in words is "two billion, one hundred twenty-seven million, one hundred ninety-one thousand, four hundred fifty".