2161835 has 16 divisors (see below), whose sum is σ = 2835840. Its totient is φ = 1572480.

The previous prime is 2161829. The next prime is 2161843. The reversal of 2161835 is 5381612.

It is not a de Polignac number, because 2161835 - 2¹² = 2157739 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4925 + ... + 5345.

It is an arithmetic number, because the mean of its divisors is an integer number (177240).

2^2161835 is an apocalyptic number.

2161835 is a deficient number, since it is larger than the sum of its proper divisors (674005).

2161835 is a wasteful number, since it uses less digits than its factorization.

2161835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518.

The product of its digits is 1440, while the sum is 26.

The square root of 2161835 is about 1470.3179928165. The cubic root of 2161835 is about 129.3026764822.

The spelling of 2161835 in words is "two million, one hundred sixty-one thousand, eight hundred thirty-five".