197191059844 has 27 divisors (see below), whose sum is σ = 346907683717. Its totient is φ = 98077309568.

The previous prime is 197191059839. The next prime is 197191059869. The reversal of 197191059844 is 448950191791.

The square root of 197191059844 is 444062.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3802202244 + 193388857600 = 61662^2 + 439760^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 212261172 + ... + 212262100.

Almost surely, 2^197191059844 is an apocalyptic number.

197191059844 is the 444062-nd square number.

It is an amenable number.

197191059844 is a deficient number, since it is larger than the sum of its proper divisors (149716623873).

197191059844 is an frugal number, since it uses more digits than its factorization.

197191059844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 58.

The spelling of 197191059844 in words is "one hundred ninety-seven billion, one hundred ninety-one million, fifty-nine thousand, eight hundred forty-four".