181045012 has 12 divisors (see below), whose sum is σ = 324556596. Its totient is φ = 88314560.

The previous prime is 181044953. The next prime is 181045027. The reversal of 181045012 is 210540181.

It can be written as a sum of positive squares in 2 ways, for example, as 27185796 + 153859216 = 5214^2 + 12404^2 .

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, 551803 + ... + 552130.

It is an arithmetic number, because the mean of its divisors is an integer number (27046383).

Almost surely, 2^181045012 is an apocalyptic number.

It is an amenable number.

181045012 is a deficient number, since it is larger than the sum of its proper divisors (143511584).

181045012 is a wasteful number, since it uses less digits than its factorization.

181045012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103978 (or 1103976 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 181045012 is about 13455.2968008885. The cubic root of 181045012 is about 565.7121695350.

Adding to 181045012 its reverse (210540181), we get a palindrome (391585193).

The spelling of 181045012 in words is "one hundred eighty-one million, forty-five thousand, twelve".