18011009810 has 8 divisors (see below), whose sum is σ = 32419817676. Its totient is φ = 7204403920.

The previous prime is 18011009803. The next prime is 18011009869. The reversal of 18011009810 is 1890011081.

It can be written as a sum of positive squares in 2 ways, for example, as 17950372441 + 60637369 = 133979^2 + 7787^2 .

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

It is a super-2 number, since 2×18011009810² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 900550481 + ... + 900550500.

Almost surely, 2^18011009810 is an apocalyptic number.

18011009810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18011009810 is a deficient number, since it is larger than the sum of its proper divisors (14408807866).

18011009810 is a wasteful number, since it uses less digits than its factorization.

18011009810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801100988.

The product of its (nonzero) digits is 576, while the sum is 29.

The spelling of 18011009810 in words is "eighteen billion, eleven million, nine thousand, eight hundred ten".