2139185 has 8 divisors (see below), whose sum is σ = 2655720. Its totient is φ = 1652224.

The previous prime is 2139167. The next prime is 2139199. The reversal of 2139185 is 5819312.

It can be written as a sum of positive squares in 4 ways, for example, as 223729 + 1915456 = 473^2 + 1384^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2139185 - 2¹⁶ = 2073649 is a prime.

It is a super-2 number, since 2×2139185² = 9152224928450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7232 + ... + 7521.

It is an arithmetic number, because the mean of its divisors is an integer number (331965).

2^2139185 is an apocalyptic number.

It is an amenable number.

2139185 is a deficient number, since it is larger than the sum of its proper divisors (516535).

2139185 is a wasteful number, since it uses less digits than its factorization.

2139185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14787.

The product of its digits is 2160, while the sum is 29.

The square root of 2139185 is about 1462.5952960406. The cubic root of 2139185 is about 128.8495130357.

The spelling of 2139185 in words is "two million, one hundred thirty-nine thousand, one hundred eighty-five".