168457197 has 4 divisors (see below), whose sum is σ = 224609600. Its totient is φ = 112304796.

The previous prime is 168457171. The next prime is 168457207. The reversal of 168457197 is 791754861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 168457197 - 2⁸ = 168456941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168457997) 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, 28076197 + ... + 28076202.

It is an arithmetic number, because the mean of its divisors is an integer number (56152400).

Almost surely, 2^168457197 is an apocalyptic number.

It is an amenable number.

168457197 is a deficient number, since it is larger than the sum of its proper divisors (56152403).

168457197 is an equidigital number, since it uses as much as digits as its factorization.

168457197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56152402.

The product of its digits is 423360, while the sum is 48.

The square root of 168457197 is about 12979.1061710736. The cubic root of 168457197 is about 552.2849262868.

It can be divided in two parts, 16845 and 7197, that added together give a palindrome (24042).

The spelling of 168457197 in words is "one hundred sixty-eight million, four hundred fifty-seven thousand, one hundred ninety-seven".