2188783 has 2 divisors, whose sum is σ = 2188784. Its totient is φ = 2188782.

The previous prime is 2188757. The next prime is 2188787. The reversal of 2188783 is 3878812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2188783 - 2⁵ = 2188751 is a prime.

2188783 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2188787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094391 + 1094392.

It is an arithmetic number, because the mean of its divisors is an integer number (1094392).

2^2188783 is an apocalyptic number.

2188783 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188783 is an equidigital number, since it uses as much as digits as its factorization.

2188783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 37.

The square root of 2188783 is about 1479.4536153594. The cubic root of 2188783 is about 129.8377265193.

It can be divided in two parts, 21 and 88783, that added together give a square (88804 = 298²).

The spelling of 2188783 in words is "two million, one hundred eighty-eight thousand, seven hundred eighty-three".