2179810149 has 16 divisors (see below), whose sum is σ = 3214069824. Its totient is φ = 1302998400.

The previous prime is 2179810147. The next prime is 2179810181. The reversal of 2179810149 is 9410189712.

It is not a de Polignac number, because 2179810149 - 2¹ = 2179810147 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2179810149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2179810147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450022 + ... + 454839.

It is an arithmetic number, because the mean of its divisors is an integer number (200879364).

Almost surely, 2^2179810149 is an apocalyptic number.

It is an amenable number.

2179810149 is a deficient number, since it is larger than the sum of its proper divisors (1034259675).

2179810149 is a wasteful number, since it uses less digits than its factorization.

2179810149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904948.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 2179810149 is about 46688.4369946136. The cubic root of 2179810149 is about 1296.6006155038.

The spelling of 2179810149 in words is "two billion, one hundred seventy-nine million, eight hundred ten thousand, one hundred forty-nine".