196895829448921 has 2 divisors, whose sum is σ = 196895829448922. Its totient is φ = 196895829448920.

The previous prime is 196895829448891. The next prime is 196895829449003. The reversal of 196895829448921 is 129844928598691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195345655045321 + 1550174403600 = 13976611^2 + 1245060^2 .

It is a cyclic number.

It is not a de Polignac number, because 196895829448921 - 2¹⁹ = 196895828924633 is a prime.

It is a super-2 number, since 2×196895829448921² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (196895826448921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98447914724460 + 98447914724461.

It is an arithmetic number, because the mean of its divisors is an integer number (98447914724461).

Almost surely, 2^{196895829448921} is an apocalyptic number.

It is an amenable number.

196895829448921 is a deficient number, since it is larger than the sum of its proper divisors (1).

196895829448921 is an equidigital number, since it uses as much as digits as its factorization.

196895829448921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6449725440, while the sum is 85.

The spelling of 196895829448921 in words is "one hundred ninety-six trillion, eight hundred ninety-five billion, eight hundred twenty-nine million, four hundred forty-eight thousand, nine hundred twenty-one".