197772349789 has 16 divisors (see below), whose sum is σ = 233564875776. Its totient is φ = 163876291200.

The previous prime is 197772349781. The next prime is 197772349799. The reversal of 197772349789 is 987943277791.

It is a cyclic number.

It is not a de Polignac number, because 197772349789 - 2³ = 197772349781 is a prime.

It is a super-2 number, since 2×197772349789² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197772349781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280072 + ... + 688465.

It is an arithmetic number, because the mean of its divisors is an integer number (14597804736).

Almost surely, 2^197772349789 is an apocalyptic number.

It is an amenable number.

197772349789 is a deficient number, since it is larger than the sum of its proper divisors (35792525987).

197772349789 is an equidigital number, since it uses as much as digits as its factorization.

197772349789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969516.

The product of its digits is 336063168, while the sum is 73.

The spelling of 197772349789 in words is "one hundred ninety-seven billion, seven hundred seventy-two million, three hundred forty-nine thousand, seven hundred eighty-nine".