180438106 has 8 divisors (see below), whose sum is σ = 272474100. Its totient is φ = 89613408.

The previous prime is 180438103. The next prime is 180438109. The reversal of 180438106 is 601834081.

It is an interprime number because it is at equal distance from previous prime (180438103) and next prime (180438109).

It can be written as a sum of positive squares in 2 ways, for example, as 162333081 + 18105025 = 12741^2 + 4255^2 .

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

It is not an unprimeable number, because it can be changed into a prime (180438103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302451 + ... + 303046.

Almost surely, 2^180438106 is an apocalyptic number.

180438106 is a deficient number, since it is larger than the sum of its proper divisors (92035994).

180438106 is a wasteful number, since it uses less digits than its factorization.

180438106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605648.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 180438106 is about 13432.7251888811. The cubic root of 180438106 is about 565.0793278858.

The spelling of 180438106 in words is "one hundred eighty million, four hundred thirty-eight thousand, one hundred six".