196542641 has 2 divisors, whose sum is σ = 196542642. Its totient is φ = 196542640.

The previous prime is 196542607. The next prime is 196542649. The reversal of 196542641 is 146245691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179560000 + 16982641 = 13400^2 + 4121^2 .

It is a cyclic number.

It is not a de Polignac number, because 196542641 - 2¹⁴ = 196526257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 196542595 and 196542604.

It is not a weakly prime, because it can be changed into another prime (196542649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98271320 + 98271321.

It is an arithmetic number, because the mean of its divisors is an integer number (98271321).

Almost surely, 2^196542641 is an apocalyptic number.

It is an amenable number.

196542641 is a deficient number, since it is larger than the sum of its proper divisors (1).

196542641 is an equidigital number, since it uses as much as digits as its factorization.

196542641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 196542641 is about 14019.3666404727. The cubic root of 196542641 is about 581.4141483284.

The spelling of 196542641 in words is "one hundred ninety-six million, five hundred forty-two thousand, six hundred forty-one".