180349481 has 32 divisors (see below), whose sum is σ = 213373440. Its totient is φ = 150921216.

The previous prime is 180349471. The next prime is 180349483. The reversal of 180349481 is 184943081.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180349481 is a prime.

It is a super-2 number, since 2×180349481² = 65051870593938722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180349483) 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 31 ways as a sum of consecutive naturals, for example, 1007450 + ... + 1007628.

It is an arithmetic number, because the mean of its divisors is an integer number (6667920).

Almost surely, 2^180349481 is an apocalyptic number.

It is an amenable number.

180349481 is a deficient number, since it is larger than the sum of its proper divisors (33023959).

180349481 is a wasteful number, since it uses less digits than its factorization.

180349481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 180349481 is about 13429.4259370980. The cubic root of 180349481 is about 564.9867968826.

The spelling of 180349481 in words is "one hundred eighty million, three hundred forty-nine thousand, four hundred eighty-one".