197351843049 has 27 divisors (see below), whose sum is σ = 286551856773. Its totient is φ = 130884649632.

The previous prime is 197351842967. The next prime is 197351843053. The reversal of 197351843049 is 940348153791.

The square root of 197351843049 is 444243.

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

197351843049 is a `hidden beast` number, since 1 + 97 + 3 + 518 + 4 + 30 + 4 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9169403049 + 188182440000 = 95757^2 + 433800^2 .

It is not a de Polignac number, because 197351843049 - 2⁷ = 197351842921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197351842986 and 197351843004.

It is not an unprimeable number, because it can be changed into a prime (197351843749) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 497107719 + ... + 497108115.

Almost surely, 2^197351843049 is an apocalyptic number.

197351843049 is the 444243-rd square number.

197351843049 is the 222122-nd centered octagonal number.

It is an amenable number.

197351843049 is a deficient number, since it is larger than the sum of its proper divisors (89200013724).

197351843049 is an frugal number, since it uses more digits than its factorization.

197351843049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546 (or 773 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

It can be divided in two parts, 197351 and 843049, that added together give a square (1040400 = 1020²).

The spelling of 197351843049 in words is "one hundred ninety-seven billion, three hundred fifty-one million, eight hundred forty-three thousand, forty-nine".