1129201189 has 2 divisors, whose sum is σ = 1129201190. Its totient is φ = 1129201188.

The previous prime is 1129201127. The next prime is 1129201201. The reversal of 1129201189 is 9811029211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 747584964 + 381616225 = 27342^2 + 19535^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129201189 - 2¹⁵ = 1129168421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129201889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564600594 + 564600595.

It is an arithmetic number, because the mean of its divisors is an integer number (564600595).

Almost surely, 2^1129201189 is an apocalyptic number.

It is an amenable number.

1129201189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129201189 is an equidigital number, since it uses as much as digits as its factorization.

1129201189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 34.

The square root of 1129201189 is about 33603.5889303509. The cubic root of 1129201189 is about 1041.3349440782.

The spelling of 1129201189 in words is "one billion, one hundred twenty-nine million, two hundred one thousand, one hundred eighty-nine".