118798189 has 2 divisors, whose sum is σ = 118798190. Its totient is φ = 118798188.

The previous prime is 118798177. The next prime is 118798219. The reversal of 118798189 is 981897811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113252164 + 5546025 = 10642^2 + 2355^2 .

It is an emirp because it is prime and its reverse (981897811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118798189 - 2⁷ = 118798061 is a prime.

It is a super-2 number, since 2×118798189² = 28226019419359442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118798109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59399094 + 59399095.

It is an arithmetic number, because the mean of its divisors is an integer number (59399095).

Almost surely, 2^118798189 is an apocalyptic number.

It is an amenable number.

118798189 is a deficient number, since it is larger than the sum of its proper divisors (1).

118798189 is an equidigital number, since it uses as much as digits as its factorization.

118798189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 52.

The square root of 118798189 is about 10899.4581975436. The cubic root of 118798189 is about 491.5902643833.

The spelling of 118798189 in words is "one hundred eighteen million, seven hundred ninety-eight thousand, one hundred eighty-nine".