180797646 has 16 divisors (see below), whose sum is σ = 364914000. Its totient is φ = 59712768.

The previous prime is 180797633. The next prime is 180797647. The reversal of 180797646 is 646797081.

It is a junction number, because it is equal to n+sod(n) for n = 180797595 and 180797604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180797647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137571 + ... + 138878.

It is an arithmetic number, because the mean of its divisors is an integer number (22807125).

Almost surely, 2^180797646 is an apocalyptic number.

180797646 is an abundant number, since it is smaller than the sum of its proper divisors (184116354).

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

180797646 is a wasteful number, since it uses less digits than its factorization.

180797646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276563.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 180797646 is about 13446.1015167966. The cubic root of 180797646 is about 565.4544035484.

The spelling of 180797646 in words is "one hundred eighty million, seven hundred ninety-seven thousand, six hundred forty-six".