189318029 has 2 divisors, whose sum is σ = 189318030. Its totient is φ = 189318028.

The previous prime is 189318013. The next prime is 189318089. The reversal of 189318029 is 920813981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163072900 + 26245129 = 12770^2 + 5123^2 .

It is a cyclic number.

It is not a de Polignac number, because 189318029 - 2⁴ = 189318013 is a prime.

It is a super-2 number, since 2×189318029² = 71682632208889682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189318089) 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, 94659014 + 94659015.

It is an arithmetic number, because the mean of its divisors is an integer number (94659015).

Almost surely, 2^189318029 is an apocalyptic number.

It is an amenable number.

189318029 is a deficient number, since it is larger than the sum of its proper divisors (1).

189318029 is an equidigital number, since it uses as much as digits as its factorization.

189318029 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 41.

The square root of 189318029 is about 13759.2888260985. The cubic root of 189318029 is about 574.2010620686.

The spelling of 189318029 in words is "one hundred eighty-nine million, three hundred eighteen thousand, twenty-nine".