196953139 has 2 divisors, whose sum is σ = 196953140. Its totient is φ = 196953138.

The previous prime is 196953103. The next prime is 196953157. The reversal of 196953139 is 931359691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 196953139 - 2¹³ = 196944947 is a prime.

It is not a weakly prime, because it can be changed into another prime (196953179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98476569 + 98476570.

It is an arithmetic number, because the mean of its divisors is an integer number (98476570).

Almost surely, 2^196953139 is an apocalyptic number.

196953139 is a deficient number, since it is larger than the sum of its proper divisors (1).

196953139 is an equidigital number, since it uses as much as digits as its factorization.

196953139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 196830, while the sum is 46.

The square root of 196953139 is about 14033.9993943280. Note that the first 3 decimals coincide. The cubic root of 196953139 is about 581.8186464315.

The spelling of 196953139 in words is "one hundred ninety-six million, nine hundred fifty-three thousand, one hundred thirty-nine".