189261049 has 2 divisors, whose sum is σ = 189261050. Its totient is φ = 189261048.

The previous prime is 189261029. The next prime is 189261053. The reversal of 189261049 is 940162981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175085824 + 14175225 = 13232^2 + 3765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189261049 is a prime.

It is not a weakly prime, because it can be changed into another prime (189261029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94630524 + 94630525.

It is an arithmetic number, because the mean of its divisors is an integer number (94630525).

Almost surely, 2^189261049 is an apocalyptic number.

It is an amenable number.

189261049 is a deficient number, since it is larger than the sum of its proper divisors (1).

189261049 is an equidigital number, since it uses as much as digits as its factorization.

189261049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 189261049 is about 13757.2180690720. The cubic root of 189261049 is about 574.1434495604.

The spelling of 189261049 in words is "one hundred eighty-nine million, two hundred sixty-one thousand, forty-nine".