18262809338 has 8 divisors (see below), whose sum is σ = 27517058688. Its totient is φ = 9090456444.

The previous prime is 18262809287. The next prime is 18262809343. The reversal of 18262809338 is 83390826281.

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

It is a super-2 number, since 2×18262809338² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20473556 + ... + 20474447.

It is an arithmetic number, because the mean of its divisors is an integer number (3439632336).

Almost surely, 2^18262809338 is an apocalyptic number.

18262809338 is a deficient number, since it is larger than the sum of its proper divisors (9254249350).

18262809338 is a wasteful number, since it uses less digits than its factorization.

18262809338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40948228.

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 18262809338 in words is "eighteen billion, two hundred sixty-two million, eight hundred nine thousand, three hundred thirty-eight".