118144009 has 2 divisors, whose sum is σ = 118144010. Its totient is φ = 118144008.

The previous prime is 118143959. The next prime is 118144021. The reversal of 118144009 is 900441811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117614025 + 529984 = 10845^2 + 728^2 .

It is a cyclic number.

It is not a de Polignac number, because 118144009 - 2⁹ = 118143497 is a prime.

It is not a weakly prime, because it can be changed into another prime (118144079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59072004 + 59072005.

It is an arithmetic number, because the mean of its divisors is an integer number (59072005).

Almost surely, 2^118144009 is an apocalyptic number.

It is an amenable number.

118144009 is a deficient number, since it is larger than the sum of its proper divisors (1).

118144009 is an equidigital number, since it uses as much as digits as its factorization.

118144009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 118144009 is about 10869.4070215445. The cubic root of 118144009 is about 490.6862645661.

The spelling of 118144009 in words is "one hundred eighteen million, one hundred forty-four thousand, nine".