197148258 has 24 divisors (see below), whose sum is σ = 427927500. Its totient is φ = 65597184.

The previous prime is 197148229. The next prime is 197148317. The reversal of 197148258 is 852841791.

It can be written as a sum of positive squares in 2 ways, for example, as 197037369 + 110889 = 14037^2 + 333^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 618 + ... + 19866.

Almost surely, 2^197148258 is an apocalyptic number.

197148258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

197148258 is an abundant number, since it is smaller than the sum of its proper divisors (230779242).

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

197148258 is a wasteful number, since it uses less digits than its factorization.

197148258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19826 (or 19823 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 197148258 is about 14040.9493268796. The cubic root of 197148258 is about 582.0107164924.

It can be divided in two parts, 19714 and 8258, that added together give a palindrome (27972).

The spelling of 197148258 in words is "one hundred ninety-seven million, one hundred forty-eight thousand, two hundred fifty-eight".