2190403 has 2 divisors, whose sum is σ = 2190404. Its totient is φ = 2190402.

The previous prime is 2190389. The next prime is 2190407. The reversal of 2190403 is 3040912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2190403 - 2⁵ = 2190371 is a prime.

It is not a weakly prime, because it can be changed into another prime (2190407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095201 + 1095202.

It is an arithmetic number, because the mean of its divisors is an integer number (1095202).

2^2190403 is an apocalyptic number.

2190403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190403 is an equidigital number, since it uses as much as digits as its factorization.

2190403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2190403 is about 1480.0010135132. The cubic root of 2190403 is about 129.8697512023.

The spelling of 2190403 in words is "two million, one hundred ninety thousand, four hundred three".