181971068 has 6 divisors (see below), whose sum is σ = 318449376. Its totient is φ = 90985532.

The previous prime is 181971059. The next prime is 181971071. The reversal of 181971068 is 860179181.

181971068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×181971068² = 66226939178121248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22746380 + ... + 22746387.

It is an arithmetic number, because the mean of its divisors is an integer number (53074896).

Almost surely, 2^181971068 is an apocalyptic number.

It is an amenable number.

181971068 is a deficient number, since it is larger than the sum of its proper divisors (136478308).

181971068 is a wasteful number, since it uses less digits than its factorization.

181971068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45492771 (or 45492769 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 41.

The square root of 181971068 is about 13489.6652293524. The cubic root of 181971068 is about 566.6750800750.

The spelling of 181971068 in words is "one hundred eighty-one million, nine hundred seventy-one thousand, sixty-eight".