118171129 has 2 divisors, whose sum is σ = 118171130. Its totient is φ = 118171128.

The previous prime is 118171103. The next prime is 118171133. The reversal of 118171129 is 921171811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114062400 + 4108729 = 10680^2 + 2027^2 .

It is a cyclic number.

It is not a de Polignac number, because 118171129 - 2⁹ = 118170617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118171129.

It is not a weakly prime, because it can be changed into another prime (118171139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59085564 + 59085565.

It is an arithmetic number, because the mean of its divisors is an integer number (59085565).

Almost surely, 2^118171129 is an apocalyptic number.

It is an amenable number.

118171129 is a deficient number, since it is larger than the sum of its proper divisors (1).

118171129 is an equidigital number, since it uses as much as digits as its factorization.

118171129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 31.

The square root of 118171129 is about 10870.6544881162. The cubic root of 118171129 is about 490.7238074301.

The spelling of 118171129 in words is "one hundred eighteen million, one hundred seventy-one thousand, one hundred twenty-nine".