180236069 has 4 divisors (see below), whose sum is σ = 194100396. Its totient is φ = 166371744.

The previous prime is 180236059. The next prime is 180236083. The reversal of 180236069 is 960632081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 960632081 = 137 ⋅7011913.

It can be written as a sum of positive squares in 2 ways, for example, as 64995844 + 115240225 = 8062^2 + 10735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180236069 is a prime.

It is a super-2 number, since 2×180236069² = 64970081137145522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180236009) 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, 6932144 + ... + 6932169.

It is an arithmetic number, because the mean of its divisors is an integer number (48525099).

Almost surely, 2^180236069 is an apocalyptic number.

It is an amenable number.

180236069 is a deficient number, since it is larger than the sum of its proper divisors (13864327).

180236069 is a wasteful number, since it uses less digits than its factorization.

180236069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13864326.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 180236069 is about 13425.2027545211. The cubic root of 180236069 is about 564.8683422054.

The spelling of 180236069 in words is "one hundred eighty million, two hundred thirty-six thousand, sixty-nine".