168224546 has 12 divisors (see below), whose sum is σ = 293534838. Its totient is φ = 72096192.

The previous prime is 168224543. The next prime is 168224549. The reversal of 168224546 is 645422861.

It is an interprime number because it is at equal distance from previous prime (168224543) and next prime (168224549).

It can be written as a sum of positive squares in only one way, i.e., 149206225 + 19018321 = 12215^2 + 4361^2 .

It is a super-2 number, since 2×168224546² = 56598995753812232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168224543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 858191 + ... + 858386.

Almost surely, 2^168224546 is an apocalyptic number.

168224546 is a deficient number, since it is larger than the sum of its proper divisors (125310292).

168224546 is a wasteful number, since it uses less digits than its factorization.

168224546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716593 (or 1716586 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 168224546 is about 12970.1405543656. The cubic root of 168224546 is about 552.0305613024.

The spelling of 168224546 in words is "one hundred sixty-eight million, two hundred twenty-four thousand, five hundred forty-six".