168726274 has 4 divisors (see below), whose sum is σ = 253089414. Its totient is φ = 84363136.

The previous prime is 168726247. The next prime is 168726277. The reversal of 168726274 is 472627861.

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

It can be written as a sum of positive squares in only one way, i.e., 151462249 + 17264025 = 12307^2 + 4155^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 168726274.

It is not an unprimeable number, because it can be changed into a prime (168726277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42181567 + ... + 42181570.

Almost surely, 2^168726274 is an apocalyptic number.

168726274 is a deficient number, since it is larger than the sum of its proper divisors (84363140).

168726274 is an equidigital number, since it uses as much as digits as its factorization.

168726274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84363139.

The product of its digits is 225792, while the sum is 43.

The square root of 168726274 is about 12989.4678104994. The cubic root of 168726274 is about 552.5788251137.

The spelling of 168726274 in words is "one hundred sixty-eight million, seven hundred twenty-six thousand, two hundred seventy-four".