197945541 has 6 divisors (see below), whose sum is σ = 285921350. Its totient is φ = 131963688.

The previous prime is 197945497. The next prime is 197945551. The reversal of 197945541 is 145549791.

197945541 is a `hidden beast` number, since 1 + 9 + 7 + 94 + 554 + 1 = 666.

197945541 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., 137945025 + 60000516 = 11745^2 + 7746^2 .

It is not a de Polignac number, because 197945541 - 2⁹ = 197945029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197945551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10996966 + ... + 10996983.

Almost surely, 2^197945541 is an apocalyptic number.

It is an amenable number.

197945541 is a deficient number, since it is larger than the sum of its proper divisors (87975809).

197945541 is a wasteful number, since it uses less digits than its factorization.

197945541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21993955 (or 21993952 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 197945541 is about 14069.3120300887. The cubic root of 197945541 is about 582.7942268913.

The spelling of 197945541 in words is "one hundred ninety-seven million, nine hundred forty-five thousand, five hundred forty-one".