2189181803 has 2 divisors, whose sum is σ = 2189181804. Its totient is φ = 2189181802.

The previous prime is 2189181779. The next prime is 2189181809. The reversal of 2189181803 is 3081819812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2189181803 - 2⁶ = 2189181739 is a prime.

It is not a weakly prime, because it can be changed into another prime (2189181809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094590901 + 1094590902.

It is an arithmetic number, because the mean of its divisors is an integer number (1094590902).

Almost surely, 2^2189181803 is an apocalyptic number.

2189181803 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189181803 is an equidigital number, since it uses as much as digits as its factorization.

2189181803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 41.

The square root of 2189181803 is about 46788.6931106224. The cubic root of 2189181803 is about 1298.4561165153.

The spelling of 2189181803 in words is "two billion, one hundred eighty-nine million, one hundred eighty-one thousand, eight hundred three".