181084013 has 4 divisors (see below), whose sum is σ = 197546208. Its totient is φ = 164621820.

The previous prime is 181083977. The next prime is 181084063. The reversal of 181084013 is 310480181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 181084013 - 2¹² = 181079917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181084063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8231081 + ... + 8231102.

It is an arithmetic number, because the mean of its divisors is an integer number (49386552).

Almost surely, 2^181084013 is an apocalyptic number.

It is an amenable number.

181084013 is a deficient number, since it is larger than the sum of its proper divisors (16462195).

181084013 is a wasteful number, since it uses less digits than its factorization.

181084013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16462194.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 181084013 is about 13456.7460033992. The cubic root of 181084013 is about 565.7527888189.

The spelling of 181084013 in words is "one hundred eighty-one million, eighty-four thousand, thirteen".