196249476491 has 2 divisors, whose sum is σ = 196249476492. Its totient is φ = 196249476490.

The previous prime is 196249476473. The next prime is 196249476529. The reversal of 196249476491 is 194674942691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196249476491 - 2⁶ = 196249476427 is a prime.

It is not a weakly prime, because it can be changed into another prime (196249476461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98124738245 + 98124738246.

It is an arithmetic number, because the mean of its divisors is an integer number (98124738246).

Almost surely, 2^196249476491 is an apocalyptic number.

196249476491 is a deficient number, since it is larger than the sum of its proper divisors (1).

196249476491 is an equidigital number, since it uses as much as digits as its factorization.

196249476491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23514624, while the sum is 62.

The spelling of 196249476491 in words is "one hundred ninety-six billion, two hundred forty-nine million, four hundred seventy-six thousand, four hundred ninety-one".