18008810 has 16 divisors (see below), whose sum is σ = 32704776. Its totient is φ = 7139328.

The previous prime is 18008801. The next prime is 18008819. The reversal of 18008810 is 1880081.

It is an interprime number because it is at equal distance from previous prime (18008801) and next prime (18008819).

It can be written as a sum of positive squares in 4 ways, for example, as 10778089 + 7230721 = 3283^2 + 2689^2 .

It is a super-2 number, since 2×18008810² = 648634475232200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18008810.

It is not an unprimeable number, because it can be changed into a prime (18008819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6839 + ... + 9098.

Almost surely, 2^18008810 is an apocalyptic number.

18008810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18008810 is a deficient number, since it is larger than the sum of its proper divisors (14695966).

18008810 is a wasteful number, since it uses less digits than its factorization.

18008810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16057.

The product of its (nonzero) digits is 512, while the sum is 26.

The square root of 18008810 is about 4243.6788285637. The cubic root of 18008810 is about 262.1168893576.

Adding to 18008810 its reverse (1880081), we get a palindrome (19888891).

The spelling of 18008810 in words is "eighteen million, eight thousand, eight hundred ten".