197092490401 has 9 divisors (see below), whose sum is σ = 203669625459. Its totient is φ = 190721349600.

The previous prime is 197092490381. The next prime is 197092490423. The reversal of 197092490401 is 104094290791.

The square root of 197092490401 is 443951.

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

197092490401 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., 2223216801 + 194869273600 = 47151^2 + 441440^2 .

It is a de Polignac number, because none of the positive numbers 2^k-197092490401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197092490471) 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, 13755321 + ... + 13769641.

Almost surely, 2^197092490401 is an apocalyptic number.

197092490401 is the 443951-st square number.

197092490401 is the 221976-th centered octagonal number.

It is an amenable number.

197092490401 is a deficient number, since it is larger than the sum of its proper divisors (6577135058).

197092490401 is an frugal number, since it uses more digits than its factorization.

197092490401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28704 (or 14352 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 197092490401 in words is "one hundred ninety-seven billion, ninety-two million, four hundred ninety thousand, four hundred one".