1808043011 has 8 divisors (see below), whose sum is σ = 1817508000. Its totient is φ = 1798603200.

The previous prime is 1808042981. The next prime is 1808043079. The reversal of 1808043011 is 1103408081.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1808043011 is a prime.

It is a super-2 number, since 2×1808043011² = 6538039059251892242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1808043091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147311 + ... + 159111.

It is an arithmetic number, because the mean of its divisors is an integer number (227188500).

Almost surely, 2^1808043011 is an apocalyptic number.

1808043011 is a deficient number, since it is larger than the sum of its proper divisors (9464989).

1808043011 is a wasteful number, since it uses less digits than its factorization.

1808043011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12589.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1808043011 is about 42521.0890147466. The cubic root of 1808043011 is about 1218.2495300530.

The spelling of 1808043011 in words is "one billion, eight hundred eight million, forty-three thousand, eleven".