180819683540 has 24 divisors (see below), whose sum is σ = 379852260480. Its totient is φ = 72302935328.

The previous prime is 180819683521. The next prime is 180819683543. The reversal of 180819683540 is 45386918081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180819683543) 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 7 ways as a sum of consecutive naturals, for example, 1499120 + ... + 1615239.

It is an arithmetic number, because the mean of its divisors is an integer number (15827177520).

Almost surely, 2^180819683540 is an apocalyptic number.

180819683540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180819683540 is an abundant number, since it is smaller than the sum of its proper divisors (199032576940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180819683540 is a wasteful number, since it uses less digits than its factorization.

180819683540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3117271 (or 3117269 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 180819683540 in words is "one hundred eighty billion, eight hundred nineteen million, six hundred eighty-three thousand, five hundred forty".