1209340338 has 32 divisors (see below), whose sum is σ = 2518112256. Its totient is φ = 386840448.

The previous prime is 1209340309. The next prime is 1209340343. The reversal of 1209340338 is 8330439021.

It is a happy number.

It is a super-2 number, since 2×1209340338² = 2925008106227908488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1209340299 and 1209340308.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21106 + ... + 53517.

It is an arithmetic number, because the mean of its divisors is an integer number (78691008).

Almost surely, 2^1209340338 is an apocalyptic number.

1209340338 is an abundant number, since it is smaller than the sum of its proper divisors (1308771918).

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

1209340338 is a wasteful number, since it uses less digits than its factorization.

1209340338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74738.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 1209340338 is about 34775.5709945933. The cubic root of 1209340338 is about 1065.4085549256.

Adding to 1209340338 its reverse (8330439021), we get a palindrome (9539779359).

The spelling of 1209340338 in words is "one billion, two hundred nine million, three hundred forty thousand, three hundred thirty-eight".