180738385 has 4 divisors (see below), whose sum is σ = 216886068. Its totient is φ = 144590704.

The previous prime is 180738379. The next prime is 180738409. The reversal of 180738385 is 583837081.

180738385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583837081 = 14879 ⋅39239.

It can be written as a sum of positive squares in 2 ways, for example, as 86881041 + 93857344 = 9321^2 + 9688^2 .

It is a cyclic number.

It is not a de Polignac number, because 180738385 - 2¹¹ = 180736337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18073834 + ... + 18073843.

It is an arithmetic number, because the mean of its divisors is an integer number (54221517).

Almost surely, 2^180738385 is an apocalyptic number.

It is an amenable number.

180738385 is a deficient number, since it is larger than the sum of its proper divisors (36147683).

180738385 is an equidigital number, since it uses as much as digits as its factorization.

180738385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36147682.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 180738385 is about 13443.8976863111. The cubic root of 180738385 is about 565.3926161376.

The spelling of 180738385 in words is "one hundred eighty million, seven hundred thirty-eight thousand, three hundred eighty-five".