181461849 has 16 divisors (see below), whose sum is σ = 248160000. Its totient is φ = 117882576.

The previous prime is 181461827. The next prime is 181461851. The reversal of 181461849 is 948164181.

It is a happy number.

181461849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 181461849 - 2⁹ = 181461337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 181461849.

It is not an unprimeable number, because it can be changed into a prime (181461809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62962 + ... + 65780.

It is an arithmetic number, because the mean of its divisors is an integer number (15510000).

Almost surely, 2^181461849 is an apocalyptic number.

It is an amenable number.

181461849 is a deficient number, since it is larger than the sum of its proper divisors (66698151).

181461849 is a wasteful number, since it uses less digits than its factorization.

181461849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3364.

The product of its digits is 55296, while the sum is 42.

The square root of 181461849 is about 13470.7775944821. Note that the first 3 decimals coincide. The cubic root of 181461849 is about 566.1460009093.

The spelling of 181461849 in words is "one hundred eighty-one million, four hundred sixty-one thousand, eight hundred forty-nine".