18000181802 has 16 divisors (see below), whose sum is σ = 27186570432. Its totient is φ = 8938024800.

The previous prime is 18000181789. The next prime is 18000181817. The reversal of 18000181802 is 20818100081.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1630433 + ... + 1641435.

It is an arithmetic number, because the mean of its divisors is an integer number (1699160652).

Almost surely, 2^18000181802 is an apocalyptic number.

18000181802 is a deficient number, since it is larger than the sum of its proper divisors (9186388630).

18000181802 is a wasteful number, since it uses less digits than its factorization.

18000181802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16573.

The product of its (nonzero) digits is 1024, while the sum is 29.

Adding to 18000181802 its reverse (20818100081), we get a palindrome (38818281883).

The spelling of 18000181802 in words is "eighteen billion, one hundred eighty-one thousand, eight hundred two".