18532738226 has 8 divisors (see below), whose sum is σ = 27799695084. Its totient is φ = 9266173200.

The previous prime is 18532738177. The next prime is 18532738243. The reversal of 18532738226 is 62283723581.

It is a Cunningham number, because it is equal to 136135²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 18532738225 + 1 = 136135^2 + 1^2 .

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

It is a Curzon number.

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, 101576 + ... + 217676.

Almost surely, 2^18532738226 is an apocalyptic number.

18532738226 is a deficient number, since it is larger than the sum of its proper divisors (9266956858).

18532738226 is a wasteful number, since it uses less digits than its factorization.

18532738226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195916.

The product of its digits is 967680, while the sum is 47.

The spelling of 18532738226 in words is "eighteen billion, five hundred thirty-two million, seven hundred thirty-eight thousand, two hundred twenty-six".