203160989 has 2 divisors, whose sum is σ = 203160990. Its totient is φ = 203160988.

The previous prime is 203160967. The next prime is 203161003. The reversal of 203160989 is 989061302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120077764 + 83083225 = 10958^2 + 9115^2 .

It is a cyclic number.

It is not a de Polignac number, because 203160989 - 2¹² = 203156893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203160929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101580494 + 101580495.

It is an arithmetic number, because the mean of its divisors is an integer number (101580495).

Almost surely, 2^203160989 is an apocalyptic number.

It is an amenable number.

203160989 is a deficient number, since it is larger than the sum of its proper divisors (1).

203160989 is an equidigital number, since it uses as much as digits as its factorization.

203160989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 203160989 is about 14253.4553354616. The cubic root of 203160989 is about 587.8683866735.

The spelling of 203160989 in words is "two hundred three million, one hundred sixty thousand, nine hundred eighty-nine".