18192011009 has 8 divisors (see below), whose sum is σ = 18312174120. Its totient is φ = 18072020736.

The previous prime is 18192010957. The next prime is 18192011027. The reversal of 18192011009 is 90011029181.

It can be written as a sum of positive squares in 4 ways, for example, as 9197385409 + 8994625600 = 95903^2 + 94840^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 18192011009 - 2¹² = 18192006913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18192011099) 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, 171497 + ... + 256505.

It is an arithmetic number, because the mean of its divisors is an integer number (2289021765).

Almost surely, 2^18192011009 is an apocalyptic number.

It is an amenable number.

18192011009 is a deficient number, since it is larger than the sum of its proper divisors (120163111).

18192011009 is a wasteful number, since it uses less digits than its factorization.

18192011009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86419.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 18192011009 in words is "eighteen billion, one hundred ninety-two million, eleven thousand, nine".