2185394 has 8 divisors (see below), whose sum is σ = 3296748. Its totient is φ = 1086480.

The previous prime is 2185387. The next prime is 2185409. The reversal of 2185394 is 4935812.

It can be written as a sum of positive squares in 2 ways, for example, as 1677025 + 508369 = 1295^2 + 713^2 .

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

It is a d-powerful number, because it can be written as 2¹⁹ + 1 + 8³ + 5 + 3¹³ + 9³ + 4⁸ .

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 2185394.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2657 + ... + 3380.

2^2185394 is an apocalyptic number.

2185394 is a deficient number, since it is larger than the sum of its proper divisors (1111354).

2185394 is a wasteful number, since it uses less digits than its factorization.

2185394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6220.

The product of its digits is 8640, while the sum is 32.

The square root of 2185394 is about 1478.3078163901. The cubic root of 2185394 is about 129.7706805319.

The spelling of 2185394 in words is "two million, one hundred eighty-five thousand, three hundred ninety-four".