197643374041 has 9 divisors (see below), whose sum is σ = 204238872639. Its totient is φ = 191254444200.

The previous prime is 197643374039. The next prime is 197643374063. The reversal of 197643374041 is 140473346791.

The square root of 197643374041 is 444571.

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

197643374041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3321101641 + 194322272400 = 57629^2 + 440820^2 .

It is not a de Polignac number, because 197643374041 - 2¹ = 197643374039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197643374941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13774531 + ... + 13788871.

It is an arithmetic number, because the mean of its divisors is an integer number (22693208071).

Almost surely, 2^197643374041 is an apocalyptic number.

197643374041 is the 444571-st square number.

197643374041 is the 222286-th centered octagonal number.

It is an amenable number.

197643374041 is a deficient number, since it is larger than the sum of its proper divisors (6595498598).

197643374041 is an frugal number, since it uses more digits than its factorization.

197643374041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28744 (or 14372 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 49.

Multiplying 197643374041 by its sum of digits (49), we get a square (9684525328009 = 3111997²).

The spelling of 197643374041 in words is "one hundred ninety-seven billion, six hundred forty-three million, three hundred seventy-four thousand, forty-one".