1818536338 has 8 divisors (see below), whose sum is σ = 2745179532. Its totient is φ = 903476496.

The previous prime is 1818536329. The next prime is 1818536351. The reversal of 1818536338 is 8336358181.

It can be written as a sum of positive squares in 2 ways, for example, as 1818425449 + 110889 = 42643^2 + 333^2 .

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

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, 2895445 + ... + 2896072.

Almost surely, 2^1818536338 is an apocalyptic number.

1818536338 is a deficient number, since it is larger than the sum of its proper divisors (926643194).

1818536338 is a wasteful number, since it uses less digits than its factorization.

1818536338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791676.

The product of its digits is 414720, while the sum is 46.

The square root of 1818536338 is about 42644.3001818531. The cubic root of 1818536338 is about 1220.6017675373.

It can be divided in two parts, 181853 and 6338, that added together give a triangular number (188191 = T₆₁₃).

The spelling of 1818536338 in words is "one billion, eight hundred eighteen million, five hundred thirty-six thousand, three hundred thirty-eight".