197738146 has 8 divisors (see below), whose sum is σ = 301634640. Its totient is φ = 97193268.

The previous prime is 197738143. The next prime is 197738147. The reversal of 197738146 is 641837791.

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

It is a junction number, because it is equal to n+sod(n) for n = 197738096 and 197738105.

It is not an unprimeable number, because it can be changed into a prime (197738143) 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, 837756 + ... + 837991.

It is an arithmetic number, because the mean of its divisors is an integer number (37704330).

Almost surely, 2^197738146 is an apocalyptic number.

197738146 is a deficient number, since it is larger than the sum of its proper divisors (103896494).

197738146 is a wasteful number, since it uses less digits than its factorization.

197738146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675808.

The product of its digits is 254016, while the sum is 46.

The square root of 197738146 is about 14061.9396243904. The cubic root of 197738146 is about 582.5906172764.

The spelling of 197738146 in words is "one hundred ninety-seven million, seven hundred thirty-eight thousand, one hundred forty-six".