190814489 has 2 divisors, whose sum is σ = 190814490. Its totient is φ = 190814488.

The previous prime is 190814471. The next prime is 190814531. The reversal of 190814489 is 984418091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150872089 + 39942400 = 12283^2 + 6320^2 .

It is an emirp because it is prime and its reverse (984418091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190814489 - 2²⁰ = 189765913 is a prime.

It is a super-2 number, since 2×190814489² = 72820338424662242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (190814089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95407244 + 95407245.

It is an arithmetic number, because the mean of its divisors is an integer number (95407245).

Almost surely, 2^190814489 is an apocalyptic number.

It is an amenable number.

190814489 is a deficient number, since it is larger than the sum of its proper divisors (1).

190814489 is an equidigital number, since it uses as much as digits as its factorization.

190814489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 190814489 is about 13813.5617781946. The cubic root of 190814489 is about 575.7100128927.

The spelling of 190814489 in words is "one hundred ninety million, eight hundred fourteen thousand, four hundred eighty-nine".