180000101 has 4 divisors (see below), whose sum is σ = 180300204. Its totient is φ = 179700000.

The previous prime is 180000089. The next prime is 180000113. The reversal of 180000101 is 101000081.

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

It is an interprime number because it is at equal distance from previous prime (180000089) and next prime (180000113).

It can be written as a sum of positive squares in 2 ways, for example, as 86007076 + 93993025 = 9274^2 + 9695^2 .

It is a cyclic number.

It is not a de Polignac number, because 180000101 - 2²² = 175805797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180000151) 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, 149150 + ... + 150351.

It is an arithmetic number, because the mean of its divisors is an integer number (45075051).

Almost surely, 2^180000101 is an apocalyptic number.

It is an amenable number.

180000101 is a deficient number, since it is larger than the sum of its proper divisors (300103).

180000101 is an equidigital number, since it uses as much as digits as its factorization.

180000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300102.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 180000101 is about 13416.4116290460. The cubic root of 180000101 is about 564.6217229338.

Adding to 180000101 its reverse (101000081), we get a palindrome (281000182).

The spelling of 180000101 in words is "one hundred eighty million, one hundred one", and thus it is an aban number.