181449932 has 6 divisors (see below), whose sum is σ = 317537388. Its totient is φ = 90724964.

The previous prime is 181449923. The next prime is 181449937. The reversal of 181449932 is 239944181.

It is a self number, because there is not a number n which added to its sum of digits gives 181449932.

It is not an unprimeable number, because it can be changed into a prime (181449937) by changing a digit.

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 as a sum of consecutive naturals, namely, 22681238 + ... + 22681245.

It is an arithmetic number, because the mean of its divisors is an integer number (52922898).

Almost surely, 2^181449932 is an apocalyptic number.

It is an amenable number.

181449932 is a deficient number, since it is larger than the sum of its proper divisors (136087456).

181449932 is a wasteful number, since it uses less digits than its factorization.

181449932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45362487 (or 45362485 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 181449932 is about 13470.3352593764. The cubic root of 181449932 is about 566.1336072856.

The spelling of 181449932 in words is "one hundred eighty-one million, four hundred forty-nine thousand, nine hundred thirty-two".