180378845 has 8 divisors (see below), whose sum is σ = 216562776. Its totient is φ = 144230976.

The previous prime is 180378841. The next prime is 180378859. The reversal of 180378845 is 548873081.

180378845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 40804 + 180338041 = 202^2 + 13429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 180378845 - 2² = 180378841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 180378796 and 180378805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180378841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3599 + ... + 19331.

It is an arithmetic number, because the mean of its divisors is an integer number (27070347).

Almost surely, 2^180378845 is an apocalyptic number.

It is an amenable number.

180378845 is a deficient number, since it is larger than the sum of its proper divisors (36183931).

180378845 is a wasteful number, since it uses less digits than its factorization.

180378845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18031.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 180378845 is about 13430.5191634575. The cubic root of 180378845 is about 565.0174584106.

The spelling of 180378845 in words is "one hundred eighty million, three hundred seventy-eight thousand, eight hundred forty-five".