2185139 has 6 divisors (see below), whose sum is σ = 2401980. Its totient is φ = 1986380.

The previous prime is 2185103. The next prime is 2185151. The reversal of 2185139 is 9315812.

It is not a de Polignac number, because 2185139 - 2¹⁶ = 2119603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2185189) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8909 + ... + 9150.

It is an arithmetic number, because the mean of its divisors is an integer number (400330).

2^2185139 is an apocalyptic number.

2185139 is a deficient number, since it is larger than the sum of its proper divisors (216841).

2185139 is a wasteful number, since it uses less digits than its factorization.

2185139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18081 (or 18070 counting only the distinct ones).

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

The square root of 2185139 is about 1478.2215666131. The cubic root of 2185139 is about 129.7656329583.

The spelling of 2185139 in words is "two million, one hundred eighty-five thousand, one hundred thirty-nine".