181148612 has 12 divisors (see below), whose sum is σ = 317541756. Its totient is φ = 90422400.

The previous prime is 181148599. The next prime is 181148623. The reversal of 181148612 is 216841181.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 160934596 + 20214016 = 12686^2 + 4496^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35273 + ... + 40080.

It is an arithmetic number, because the mean of its divisors is an integer number (26461813).

Almost surely, 2^181148612 is an apocalyptic number.

It is an amenable number.

181148612 is a deficient number, since it is larger than the sum of its proper divisors (136393144).

181148612 is a wasteful number, since it uses less digits than its factorization.

181148612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75958 (or 75956 counting only the distinct ones).

The product of its digits is 3072, while the sum is 32.

The square root of 181148612 is about 13459.1460353174. The cubic root of 181148612 is about 565.8200554222.

Adding to 181148612 its reverse (216841181), we get a palindrome (397989793).

The spelling of 181148612 in words is "one hundred eighty-one million, one hundred forty-eight thousand, six hundred twelve".