181325812 has 12 divisors (see below), whose sum is σ = 324072000. Its totient is φ = 88733816.

The previous prime is 181325803. The next prime is 181325831. The reversal of 181325812 is 218523181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482062 + ... + 482437.

It is an arithmetic number, because the mean of its divisors is an integer number (27006000).

Almost surely, 2^181325812 is an apocalyptic number.

It is an amenable number.

181325812 is a deficient number, since it is larger than the sum of its proper divisors (142746188).

181325812 is a wasteful number, since it uses less digits than its factorization.

181325812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964550 (or 964548 counting only the distinct ones).

The product of its digits is 3840, while the sum is 31.

The square root of 181325812 is about 13465.7273104723. The cubic root of 181325812 is about 566.0044908016.

Adding to 181325812 its reverse (218523181), we get a palindrome (399848993).

The spelling of 181325812 in words is "one hundred eighty-one million, three hundred twenty-five thousand, eight hundred twelve".