197074849 has 2 divisors, whose sum is σ = 197074850. Its totient is φ = 197074848.

The previous prime is 197074799. The next prime is 197074861. The reversal of 197074849 is 948470791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195300625 + 1774224 = 13975^2 + 1332^2 .

It is a cyclic number.

It is not a de Polignac number, because 197074849 - 2²³ = 188686241 is a prime.

It is a super-2 number, since 2×197074849² = 77676992216745602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197072849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98537424 + 98537425.

It is an arithmetic number, because the mean of its divisors is an integer number (98537425).

Almost surely, 2^197074849 is an apocalyptic number.

It is an amenable number.

197074849 is a deficient number, since it is larger than the sum of its proper divisors (1).

197074849 is an equidigital number, since it uses as much as digits as its factorization.

197074849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 197074849 is about 14038.3349796192. The cubic root of 197074849 is about 581.9384694617.

The spelling of 197074849 in words is "one hundred ninety-seven million, seventy-four thousand, eight hundred forty-nine".