190680289 has 2 divisors, whose sum is σ = 190680290. Its totient is φ = 190680288.

The previous prime is 190680283. The next prime is 190680293. The reversal of 190680289 is 982086091.

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., 135326689 + 55353600 = 11633^2 + 7440^2 .

It is a cyclic number.

It is not a de Polignac number, because 190680289 - 2¹⁵ = 190647521 is a prime.

It is a super-2 number, since 2×190680289² = 72717945226247042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (190680283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95340144 + 95340145.

It is an arithmetic number, because the mean of its divisors is an integer number (95340145).

Almost surely, 2^190680289 is an apocalyptic number.

It is an amenable number.

190680289 is a deficient number, since it is larger than the sum of its proper divisors (1).

190680289 is an equidigital number, since it uses as much as digits as its factorization.

190680289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 190680289 is about 13808.7033786667. The cubic root of 190680289 is about 575.5750154516.

It can be divided in two parts, 190680 and 289, that added together give a square (190969 = 437²).

The spelling of 190680289 in words is "one hundred ninety million, six hundred eighty thousand, two hundred eighty-nine".