9943708138 has 16 divisors (see below), whose sum is σ = 18357615360. Its totient is φ = 3933774576.

The previous prime is 9943708127. The next prime is 9943708157. The reversal of 9943708138 is 8318073499.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27317698 + ... + 27318061.

It is an arithmetic number, because the mean of its divisors is an integer number (1147350960).

Almost surely, 2^9943708138 is an apocalyptic number.

9943708138 is a deficient number, since it is larger than the sum of its proper divisors (8413907222).

9943708138 is a wasteful number, since it uses less digits than its factorization.

9943708138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54635781.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 9943708138 is about 99718.1434744952. The cubic root of 9943708138 is about 2150.3845094160.

The spelling of 9943708138 in words is "nine billion, nine hundred forty-three million, seven hundred eight thousand, one hundred thirty-eight".