180933145747 has 4 divisors (see below), whose sum is σ = 181351005640. Its totient is φ = 180515285856.

The previous prime is 180933145741. The next prime is 180933145751. The reversal of 180933145747 is 747541339081.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 180933145747 - 2⁷ = 180933145619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 180933145694 and 180933145703.

It is not an unprimeable number, because it can be changed into a prime (180933145741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208929297 + ... + 208930162.

It is an arithmetic number, because the mean of its divisors is an integer number (45337751410).

Almost surely, 2^180933145747 is an apocalyptic number.

180933145747 is a deficient number, since it is larger than the sum of its proper divisors (417859893).

180933145747 is an equidigital number, since it uses as much as digits as its factorization.

180933145747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417859892.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 180933145747 in words is "one hundred eighty billion, nine hundred thirty-three million, one hundred forty-five thousand, seven hundred forty-seven".