181058308149 has 8 divisors (see below), whose sum is σ = 241427593440. Its totient is φ = 120697280816.

The previous prime is 181058308139. The next prime is 181058308153. The reversal of 181058308149 is 941803850181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 181058308149 - 2⁷ = 181058308021 is a prime.

It is a super-2 number, since 2×181058308149² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 181058308098 and 181058308107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181058308139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2013147 + ... + 2101160.

It is an arithmetic number, because the mean of its divisors is an integer number (30178449180).

Almost surely, 2^181058308149 is an apocalyptic number.

It is an amenable number.

181058308149 is a deficient number, since it is larger than the sum of its proper divisors (60369285291).

181058308149 is a wasteful number, since it uses less digits than its factorization.

181058308149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4128979.

The product of its (nonzero) digits is 276480, while the sum is 48.

The spelling of 181058308149 in words is "one hundred eighty-one billion, fifty-eight million, three hundred eight thousand, one hundred forty-nine".