189012529 has 2 divisors, whose sum is σ = 189012530. Its totient is φ = 189012528.

The previous prime is 189012493. The next prime is 189012533. The reversal of 189012529 is 925210981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185504400 + 3508129 = 13620^2 + 1873^2 .

It is a cyclic number.

It is not a de Polignac number, because 189012529 - 2⁹ = 189012017 is a prime.

It is a super-2 number, since 2×189012529² = 71451472237951682, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (189912529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94506264 + 94506265.

It is an arithmetic number, because the mean of its divisors is an integer number (94506265).

Almost surely, 2^189012529 is an apocalyptic number.

It is an amenable number.

189012529 is a deficient number, since it is larger than the sum of its proper divisors (1).

189012529 is an equidigital number, since it uses as much as digits as its factorization.

189012529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 189012529 is about 13748.1827526404. The cubic root of 189012529 is about 573.8920355646.

The spelling of 189012529 in words is "one hundred eighty-nine million, twelve thousand, five hundred twenty-nine".