181068868 has 6 divisors (see below), whose sum is σ = 316870526. Its totient is φ = 90534432.

The previous prime is 181068859. The next prime is 181068871. The reversal of 181068868 is 868860181.

It can be written as a sum of positive squares in only one way, i.e., 178703424 + 2365444 = 13368^2 + 1538^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22633605 + ... + 22633612.

Almost surely, 2^181068868 is an apocalyptic number.

It is an amenable number.

181068868 is a deficient number, since it is larger than the sum of its proper divisors (135801658).

181068868 is a wasteful number, since it uses less digits than its factorization.

181068868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45267221 (or 45267219 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 46.

The square root of 181068868 is about 13456.1832627235. The cubic root of 181068868 is about 565.7370160942.

The spelling of 181068868 in words is "one hundred eighty-one million, sixty-eight thousand, eight hundred sixty-eight".