2188734673 has 2 divisors, whose sum is σ = 2188734674. Its totient is φ = 2188734672.

The previous prime is 2188734641. The next prime is 2188734689. The reversal of 2188734673 is 3764378812.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1885556929 + 303177744 = 43423^2 + 17412^2 .

It is a cyclic number.

It is not a de Polignac number, because 2188734673 - 2⁵ = 2188734641 is a prime.

It is not a weakly prime, because it can be changed into another prime (2188134673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094367336 + 1094367337.

It is an arithmetic number, because the mean of its divisors is an integer number (1094367337).

Almost surely, 2^2188734673 is an apocalyptic number.

It is an amenable number.

2188734673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188734673 is an equidigital number, since it uses as much as digits as its factorization.

2188734673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 49.

The square root of 2188734673 is about 46783.9146822922. The cubic root of 2188734673 is about 1298.3677093284.

The spelling of 2188734673 in words is "two billion, one hundred eighty-eight million, seven hundred thirty-four thousand, six hundred seventy-three".