196358989 has 2 divisors, whose sum is σ = 196358990. Its totient is φ = 196358988.

The previous prime is 196358969. The next prime is 196359001. The reversal of 196358989 is 989853691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98843364 + 97515625 = 9942^2 + 9875^2 .

It is a cyclic number.

It is not a de Polignac number, because 196358989 - 2¹⁹ = 195834701 is a prime.

It is a super-2 number, since 2×196358989² = 77113705122204242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196358909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98179494 + 98179495.

It is an arithmetic number, because the mean of its divisors is an integer number (98179495).

Almost surely, 2^196358989 is an apocalyptic number.

It is an amenable number.

196358989 is a deficient number, since it is larger than the sum of its proper divisors (1).

196358989 is an equidigital number, since it uses as much as digits as its factorization.

196358989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4199040, while the sum is 58.

The square root of 196358989 is about 14012.8151704074. The cubic root of 196358989 is about 581.2329982463.

The spelling of 196358989 in words is "one hundred ninety-six million, three hundred fifty-eight thousand, nine hundred eighty-nine".