2190903 has 16 divisors (see below), whose sum is σ = 3432576. Its totient is φ = 1225440.

The previous prime is 2190901. The next prime is 2190959. The reversal of 2190903 is 3090912.

It is a happy number.

It is not a de Polignac number, because 2190903 - 2¹ = 2190901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2125 + ... + 2982.

It is an arithmetic number, because the mean of its divisors is an integer number (214536).

2^2190903 is an apocalyptic number.

2190903 is a deficient number, since it is larger than the sum of its proper divisors (1241673).

2190903 is a wasteful number, since it uses less digits than its factorization.

2190903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5134.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 2190903 is about 1480.1699226778. The cubic root of 2190903 is about 129.8796321748.

Subtracting 2190903 from its reverse (3090912), we obtain a palindrome (900009).

The spelling of 2190903 in words is "two million, one hundred ninety thousand, nine hundred three".