180131403149 has 4 divisors (see below), whose sum is σ = 181506452160. Its totient is φ = 178756354140.

The previous prime is 180131403143. The next prime is 180131403163. The reversal of 180131403149 is 941304131081.

180131403149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 941304131081 = 229 ⋅4110498389.

It is a cyclic number.

It is not a de Polignac number, because 180131403149 - 2¹² = 180131399053 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 (180131403143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687524309 + ... + 687524570.

It is an arithmetic number, because the mean of its divisors is an integer number (45376613040).

Almost surely, 2^180131403149 is an apocalyptic number.

It is an amenable number.

180131403149 is a deficient number, since it is larger than the sum of its proper divisors (1375049011).

180131403149 is a wasteful number, since it uses less digits than its factorization.

180131403149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375049010.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 180131403149 in words is "one hundred eighty billion, one hundred thirty-one million, four hundred three thousand, one hundred forty-nine".