181374812 has 6 divisors (see below), whose sum is σ = 317405928. Its totient is φ = 90687404.

The previous prime is 181374811. The next prime is 181374821. The reversal of 181374812 is 218473181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181374811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22671848 + ... + 22671855.

It is an arithmetic number, because the mean of its divisors is an integer number (52900988).

Almost surely, 2^181374812 is an apocalyptic number.

It is an amenable number.

181374812 is a deficient number, since it is larger than the sum of its proper divisors (136031116).

181374812 is a wasteful number, since it uses less digits than its factorization.

181374812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45343707 (or 45343705 counting only the distinct ones).

The product of its digits is 10752, while the sum is 35.

The square root of 181374812 is about 13467.5466214155. The cubic root of 181374812 is about 566.0554703467.

The spelling of 181374812 in words is "one hundred eighty-one million, three hundred seventy-four thousand, eight hundred twelve".