2188807 has 2 divisors, whose sum is σ = 2188808. Its totient is φ = 2188806.

The previous prime is 2188799. The next prime is 2188811. The reversal of 2188807 is 7088812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2188807 - 2³ = 2188799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2188877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094403 + 1094404.

It is an arithmetic number, because the mean of its divisors is an integer number (1094404).

2^2188807 is an apocalyptic number.

2188807 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188807 is an equidigital number, since it uses as much as digits as its factorization.

2188807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 2188807 is about 1479.4617264397. The cubic root of 2188807 is about 129.8382010743.

It can be divided in two parts, 218 and 8807, that added together give a square (9025 = 95²).

The spelling of 2188807 in words is "two million, one hundred eighty-eight thousand, eight hundred seven".