197508642 has 8 divisors (see below), whose sum is σ = 395017296. Its totient is φ = 65836212.

The previous prime is 197508599. The next prime is 197508643. The reversal of 197508642 is 246805791.

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

197508642 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 197508594 and 197508603.

It is not an unprimeable number, because it can be changed into a prime (197508643) 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, 16459048 + ... + 16459059.

It is an arithmetic number, because the mean of its divisors is an integer number (49377162).

Almost surely, 2^197508642 is an apocalyptic number.

197508642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197508642 is a wasteful number, since it uses less digits than its factorization.

197508642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32918112.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 197508642 is about 14053.7767877535. The cubic root of 197508642 is about 582.3651361845.

The spelling of 197508642 in words is "one hundred ninety-seven million, five hundred eight thousand, six hundred forty-two".