18200509106 has 8 divisors (see below), whose sum is σ = 29400822444. Its totient is φ = 8400234960.

The previous prime is 18200509097. The next prime is 18200509133. The reversal of 18200509106 is 60190500281.

It can be written as a sum of positive squares in 2 ways, for example, as 16897660081 + 1302849025 = 129991^2 + 36095^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350009765 + ... + 350009816.

Almost surely, 2^18200509106 is an apocalyptic number.

18200509106 is a deficient number, since it is larger than the sum of its proper divisors (11200313338).

18200509106 is a wasteful number, since it uses less digits than its factorization.

18200509106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700019596.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 18200509106 in words is "eighteen billion, two hundred million, five hundred nine thousand, one hundred six".