197729237089 has 4 divisors (see below), whose sum is σ = 197740436656. Its totient is φ = 197718037524.

The previous prime is 197729237033. The next prime is 197729237113. The reversal of 197729237089 is 980732927791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 197729237089 - 2¹⁷ = 197729106017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 197729237089.

It is not an unprimeable number, because it can be changed into a prime (197729237009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5573259 + ... + 5608624.

It is an arithmetic number, because the mean of its divisors is an integer number (49435109164).

Almost surely, 2^197729237089 is an apocalyptic number.

It is an amenable number.

197729237089 is a deficient number, since it is larger than the sum of its proper divisors (11199567).

197729237089 is a wasteful number, since it uses less digits than its factorization.

197729237089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11199566.

The product of its (nonzero) digits is 24004512, while the sum is 64.

The spelling of 197729237089 in words is "one hundred ninety-seven billion, seven hundred twenty-nine million, two hundred thirty-seven thousand, eighty-nine".