7138909338 has 32 divisors (see below), whose sum is σ = 16078252032. Its totient is φ = 2093521200.

The previous prime is 7138909319. The next prime is 7138909343. The reversal of 7138909338 is 8339098317.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1742556 + ... + 1746647.

It is an arithmetic number, because the mean of its divisors is an integer number (502445376).

Almost surely, 2^7138909338 is an apocalyptic number.

7138909338 is an abundant number, since it is smaller than the sum of its proper divisors (8939342694).

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

7138909338 is a wasteful number, since it uses less digits than its factorization.

7138909338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489250.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 7138909338 is about 84492.0667163492. The cubic root of 7138909338 is about 1925.5019178525.

The spelling of 7138909338 in words is "seven billion, one hundred thirty-eight million, nine hundred nine thousand, three hundred thirty-eight".