196718811959 has 2 divisors, whose sum is σ = 196718811960. Its totient is φ = 196718811958.

The previous prime is 196718811953. The next prime is 196718812001. The reversal of 196718811959 is 959118817691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196718811959 - 2²⁴ = 196702034743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 196718811895 and 196718811904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196718811953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98359405979 + 98359405980.

It is an arithmetic number, because the mean of its divisors is an integer number (98359405980).

Almost surely, 2^196718811959 is an apocalyptic number.

196718811959 is a deficient number, since it is larger than the sum of its proper divisors (1).

196718811959 is an equidigital number, since it uses as much as digits as its factorization.

196718811959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 65.

The spelling of 196718811959 in words is "one hundred ninety-six billion, seven hundred eighteen million, eight hundred eleven thousand, nine hundred fifty-nine".