190118689 has 2 divisors, whose sum is σ = 190118690. Its totient is φ = 190118688.

The previous prime is 190118657. The next prime is 190118707. The reversal of 190118689 is 986811091.

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., 101909025 + 88209664 = 10095^2 + 9392^2 .

It is a cyclic number.

It is not a de Polignac number, because 190118689 - 2⁵ = 190118657 is a prime.

It is a super-2 number, since 2×190118689² = 72290231814157442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (190115689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95059344 + 95059345.

It is an arithmetic number, because the mean of its divisors is an integer number (95059345).

Almost surely, 2^190118689 is an apocalyptic number.

It is an amenable number.

190118689 is a deficient number, since it is larger than the sum of its proper divisors (1).

190118689 is an equidigital number, since it uses as much as digits as its factorization.

190118689 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 43.

The square root of 190118689 is about 13788.3533824746. The cubic root of 190118689 is about 575.0093901428.

The spelling of 190118689 in words is "one hundred ninety million, one hundred eighteen thousand, six hundred eighty-nine".