9319999138 has 24 divisors (see below), whose sum is σ = 14617473408. Its totient is φ = 4454701272.

The previous prime is 9319999121. The next prime is 9319999163. The reversal of 9319999138 is 8319999139.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146995 + ... + 200617.

It is an arithmetic number, because the mean of its divisors is an integer number (609061392).

Almost surely, 2^9319999138 is an apocalyptic number.

9319999138 is a deficient number, since it is larger than the sum of its proper divisors (5297474270).

9319999138 is a wasteful number, since it uses less digits than its factorization.

9319999138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53758 (or 53715 counting only the distinct ones).

The product of its digits is 4251528, while the sum is 61.

The square root of 9319999138 is about 96540.1426247134. The cubic root of 9319999138 is about 2104.4500597713.

Subtracting from 9319999138 its reverse (8319999139), we obtain a palindrome (999999999).

The spelling of 9319999138 in words is "nine billion, three hundred nineteen million, nine hundred ninety-nine thousand, one hundred thirty-eight".