197168746 has 4 divisors (see below), whose sum is σ = 295753122. Its totient is φ = 98584372.

The previous prime is 197168743. The next prime is 197168749. The reversal of 197168746 is 647861791.

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

It is an interprime number because it is at equal distance from previous prime (197168743) and next prime (197168749).

It can be written as a sum of positive squares in only one way, i.e., 194295721 + 2873025 = 13939^2 + 1695^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 197168746.

It is not an unprimeable number, because it can be changed into a prime (197168743) by changing a digit.

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 as a sum of consecutive naturals, namely, 49292185 + ... + 49292188.

Almost surely, 2^197168746 is an apocalyptic number.

197168746 is a deficient number, since it is larger than the sum of its proper divisors (98584376).

197168746 is an equidigital number, since it uses as much as digits as its factorization.

197168746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98584375.

The product of its digits is 508032, while the sum is 49.

The square root of 197168746 is about 14041.6788882242. The cubic root of 197168746 is about 582.0308769926.

The spelling of 197168746 in words is "one hundred ninety-seven million, one hundred sixty-eight thousand, seven hundred forty-six".