2208536989 has 2 divisors, whose sum is σ = 2208536990. Its totient is φ = 2208536988.

The previous prime is 2208536969. The next prime is 2208537007. The reversal of 2208536989 is 9896358022.

It is a happy number.

2208536989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1268072100 + 940464889 = 35610^2 + 30667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2208536989 is a prime.

It is a super-2 number, since 2×2208536989² = 9755271263562372242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2208536969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104268494 + 1104268495.

It is an arithmetic number, because the mean of its divisors is an integer number (1104268495).

Almost surely, 2^2208536989 is an apocalyptic number.

It is an amenable number.

2208536989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2208536989 is an equidigital number, since it uses as much as digits as its factorization.

2208536989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 2208536989 is about 46995.0740929302. The cubic root of 2208536989 is about 1302.2715686754.

The spelling of 2208536989 in words is "two billion, two hundred eight million, five hundred thirty-six thousand, nine hundred eighty-nine".