181089064 has 16 divisors (see below), whose sum is σ = 365660820. Its totient is φ = 83579520.

The previous prime is 181089043. The next prime is 181089067. The reversal of 181089064 is 460980181.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 165328164 + 15760900 = 12858^2 + 3970^2 .

It is not an unprimeable number, because it can be changed into a prime (181089067) 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 in 3 ways as a sum of consecutive naturals, for example, 870517 + ... + 870724.

Almost surely, 2^181089064 is an apocalyptic number.

It is an amenable number.

181089064 is an abundant number, since it is smaller than the sum of its proper divisors (184571756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181089064 is a wasteful number, since it uses less digits than its factorization.

181089064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741260 (or 1741256 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 181089064 is about 13456.9336774765. The cubic root of 181089064 is about 565.7580489754.

It can be divided in two parts, 18108 and 9064, that added together give a palindrome (27172).

The spelling of 181089064 in words is "one hundred eighty-one million, eighty-nine thousand, sixty-four".