196651489 has 2 divisors, whose sum is σ = 196651490. Its totient is φ = 196651488.

The previous prime is 196651471. The next prime is 196651519. The reversal of 196651489 is 984156691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104203264 + 92448225 = 10208^2 + 9615^2 .

It is a cyclic number.

It is not a de Polignac number, because 196651489 - 2¹⁷ = 196520417 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (196651589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98325744 + 98325745.

It is an arithmetic number, because the mean of its divisors is an integer number (98325745).

Almost surely, 2^196651489 is an apocalyptic number.

It is an amenable number.

196651489 is a deficient number, since it is larger than the sum of its proper divisors (1).

196651489 is an equidigital number, since it uses as much as digits as its factorization.

196651489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 49.

The square root of 196651489 is about 14023.2481615352. The cubic root of 196651489 is about 581.5214602203.

The spelling of 196651489 in words is "one hundred ninety-six million, six hundred fifty-one thousand, four hundred eighty-nine".