2165149 has 8 divisors (see below), whose sum is σ = 2527488. Its totient is φ = 1816080.

The previous prime is 2165147. The next prime is 2165159. The reversal of 2165149 is 9415612.

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

It is not a de Polignac number, because 2165149 - 2¹ = 2165147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2962 + ... + 3619.

It is an arithmetic number, because the mean of its divisors is an integer number (315936).

2^2165149 is an apocalyptic number.

It is an amenable number.

2165149 is a deficient number, since it is larger than the sum of its proper divisors (362339).

2165149 is an equidigital number, since it uses as much as digits as its factorization.

2165149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6635.

The product of its digits is 2160, while the sum is 28.

The square root of 2165149 is about 1471.4445283462. Note that the first 3 decimals coincide. The cubic root of 2165149 is about 129.3687145616.

The spelling of 2165149 in words is "two million, one hundred sixty-five thousand, one hundred forty-nine".