197537161 has 8 divisors (see below), whose sum is σ = 209356704. Its totient is φ = 185739840.

The previous prime is 197537147. The next prime is 197537173. The reversal of 197537161 is 161735791.

197537161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 197537161 - 2⁷ = 197537033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197537761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14946 + ... + 24868.

It is an arithmetic number, because the mean of its divisors is an integer number (26169588).

Almost surely, 2^197537161 is an apocalyptic number.

It is an amenable number.

197537161 is a deficient number, since it is larger than the sum of its proper divisors (11819543).

197537161 is a wasteful number, since it uses less digits than its factorization.

197537161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111.

The product of its digits is 39690, while the sum is 40.

The square root of 197537161 is about 14054.7913894159. The cubic root of 197537161 is about 582.3931647842.

The spelling of 197537161 in words is "one hundred ninety-seven million, five hundred thirty-seven thousand, one hundred sixty-one".