7106189989 has 2 divisors, whose sum is σ = 7106189990. Its totient is φ = 7106189988.

The previous prime is 7106189971. The next prime is 7106190053. The reversal of 7106189989 is 9899816017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6171359364 + 934830625 = 78558^2 + 30575^2 .

It is a cyclic number.

It is not a de Polignac number, because 7106189989 - 2¹¹ = 7106187941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7106189939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3553094994 + 3553094995.

It is an arithmetic number, because the mean of its divisors is an integer number (3553094995).

Almost surely, 2^7106189989 is an apocalyptic number.

It is an amenable number.

7106189989 is a deficient number, since it is larger than the sum of its proper divisors (1).

7106189989 is an equidigital number, since it uses as much as digits as its factorization.

7106189989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 58.

The square root of 7106189989 is about 84298.2205565456. The cubic root of 7106189989 is about 1922.5557318196. Note that the first 3 decimals are identical.

The spelling of 7106189989 in words is "seven billion, one hundred six million, one hundred eighty-nine thousand, nine hundred eighty-nine".