197928132529 has 2 divisors, whose sum is σ = 197928132530. Its totient is φ = 197928132528.

The previous prime is 197928132499. The next prime is 197928132541. The reversal of 197928132529 is 925231829791.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123411690000 + 74516442529 = 351300^2 + 272977^2 .

It is a cyclic number.

It is not a de Polignac number, because 197928132529 - 2⁵ = 197928132497 is a prime.

It is not a weakly prime, because it can be changed into another prime (197928132569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98964066264 + 98964066265.

It is an arithmetic number, because the mean of its divisors is an integer number (98964066265).

Almost surely, 2^197928132529 is an apocalyptic number.

It is an amenable number.

197928132529 is a deficient number, since it is larger than the sum of its proper divisors (1).

197928132529 is an equidigital number, since it uses as much as digits as its factorization.

197928132529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 58.

The spelling of 197928132529 in words is "one hundred ninety-seven billion, nine hundred twenty-eight million, one hundred thirty-two thousand, five hundred twenty-nine".