338040018 has 12 divisors (see below), whose sum is σ = 732420078. Its totient is φ = 112680000.

The previous prime is 338040011. The next prime is 338040041. The reversal of 338040018 is 810040833.

It can be written as a sum of positive squares in only one way, i.e., 320875569 + 17164449 = 17913^2 + 4143^2 .

It is a super-2 number, since 2×338040018² = 228542107538880648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 338039973 and 338040000.

It is not an unprimeable number, because it can be changed into a prime (338040011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9389983 + ... + 9390018.

Almost surely, 2^338040018 is an apocalyptic number.

338040018 is an abundant number, since it is smaller than the sum of its proper divisors (394380060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

338040018 is a wasteful number, since it uses less digits than its factorization.

338040018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18780009 (or 18780006 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 338040018 is about 18385.8646247600. The cubic root of 338040018 is about 696.6094666477.

The spelling of 338040018 in words is "three hundred thirty-eight million, forty thousand, eighteen".