1800001105 has 16 divisors (see below), whose sum is σ = 2515152384. Its totient is φ = 1210996800.

The previous prime is 1800001097. The next prime is 1800001109. The reversal of 1800001105 is 5011000081.

It is not a de Polignac number, because 1800001105 - 2³ = 1800001097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1800001109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483321 + ... + 487030.

It is an arithmetic number, because the mean of its divisors is an integer number (157197024).

Almost surely, 2^1800001105 is an apocalyptic number.

It is an amenable number.

1800001105 is a deficient number, since it is larger than the sum of its proper divisors (715151279).

1800001105 is an equidigital number, since it uses as much as digits as its factorization.

1800001105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970416.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1800001105 is about 42426.4198937407. The cubic root of 1800001105 is about 1216.4406480344.

Adding to 1800001105 its reverse (5011000081), we get a palindrome (6811001186).

The spelling of 1800001105 in words is "one billion, eight hundred million, one thousand, one hundred five".