2180894 has 8 divisors (see below), whose sum is σ = 3341088. Its totient is φ = 1067200.

The previous prime is 2180873. The next prime is 2180911. The reversal of 2180894 is 4980812.

It is a happy number.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2180894.

It is a congruent number.

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, 11507 + ... + 11694.

It is an arithmetic number, because the mean of its divisors is an integer number (417636).

2^2180894 is an apocalyptic number.

2180894 is a deficient number, since it is larger than the sum of its proper divisors (1160194).

2180894 is a wasteful number, since it uses less digits than its factorization.

2180894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23250.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 2180894 is about 1476.7850215925. The cubic root of 2180894 is about 129.6815479632.

It can be divided in two parts, 218089 and 4, that multiplied together give a square (872356 = 934²).

The spelling of 2180894 in words is "two million, one hundred eighty thousand, eight hundred ninety-four".