6551306189 has 2 divisors, whose sum is σ = 6551306190. Its totient is φ = 6551306188.

The previous prime is 6551306159. The next prime is 6551306213. The reversal of 6551306189 is 9816031556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6497166025 + 54140164 = 80605^2 + 7358^2 .

It is a cyclic number.

It is not a de Polignac number, because 6551306189 - 2⁸ = 6551305933 is a prime.

It is a super-2 number, since 2×6551306189² = 85839225564059407442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6551306119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275653094 + 3275653095.

It is an arithmetic number, because the mean of its divisors is an integer number (3275653095).

Almost surely, 2^6551306189 is an apocalyptic number.

It is an amenable number.

6551306189 is a deficient number, since it is larger than the sum of its proper divisors (1).

6551306189 is an equidigital number, since it uses as much as digits as its factorization.

6551306189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 6551306189 is about 80940.1395415155. The cubic root of 6551306189 is about 1871.1529954666.

The spelling of 6551306189 in words is "six billion, five hundred fifty-one million, three hundred six thousand, one hundred eighty-nine".