197554469841 has 9 divisors (see below), whose sum is σ = 285358382491. Its totient is φ = 131702090952.

The previous prime is 197554469807. The next prime is 197554469857. The reversal of 197554469841 is 148964455791.

The square root of 197554469841 is 444471.

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

197554469841 is a `hidden beast` number, since 1 + 9 + 7 + 5 + 544 + 6 + 9 + 84 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 155855196225 + 41699273616 = 394785^2 + 204204^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 197554469841 - 2¹¹ = 197554467793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197554469041) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1259335 + ... + 1407491.

Almost surely, 2^197554469841 is an apocalyptic number.

197554469841 is the 444471-st square number.

197554469841 is the 222236-th centered octagonal number.

It is an amenable number.

197554469841 is a deficient number, since it is larger than the sum of its proper divisors (87803912650).

197554469841 is an frugal number, since it uses more digits than its factorization.

197554469841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296320 (or 148160 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The spelling of 197554469841 in words is "one hundred ninety-seven billion, five hundred fifty-four million, four hundred sixty-nine thousand, eight hundred forty-one".