1154005189 has 2 divisors, whose sum is σ = 1154005190. Its totient is φ = 1154005188.

The previous prime is 1154005183. The next prime is 1154005201. The reversal of 1154005189 is 9815004511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 669256900 + 484748289 = 25870^2 + 22017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1154005189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1154005183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577002594 + 577002595.

It is an arithmetic number, because the mean of its divisors is an integer number (577002595).

Almost surely, 2^1154005189 is an apocalyptic number.

It is an amenable number.

1154005189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154005189 is an equidigital number, since it uses as much as digits as its factorization.

1154005189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 34.

The square root of 1154005189 is about 33970.6518777606. The cubic root of 1154005189 is about 1048.9044321899.

The spelling of 1154005189 in words is "one billion, one hundred fifty-four million, five thousand, one hundred eighty-nine".