197154159 has 4 divisors (see below), whose sum is σ = 262872216. Its totient is φ = 131436104.

The previous prime is 197154131. The next prime is 197154161. The reversal of 197154159 is 951451791.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 197154159 - 2⁷ = 197154031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197154159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197154169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32859024 + ... + 32859029.

It is an arithmetic number, because the mean of its divisors is an integer number (65718054).

Almost surely, 2^197154159 is an apocalyptic number.

197154159 is a deficient number, since it is larger than the sum of its proper divisors (65718057).

197154159 is an equidigital number, since it uses as much as digits as its factorization.

197154159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65718056.

The product of its digits is 56700, while the sum is 42.

The square root of 197154159 is about 14041.1594606713. The cubic root of 197154159 is about 582.0165233084.

The spelling of 197154159 in words is "one hundred ninety-seven million, one hundred fifty-four thousand, one hundred fifty-nine".