9338978931 has 8 divisors (see below), whose sum is σ = 12484485120. Its totient is φ = 6209729352.

The previous prime is 9338978923. The next prime is 9338978941. The reversal of 9338978931 is 1398798339.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9338978931 - 2³ = 9338978923 is a prime.

It is a super-2 number, since 2×9338978931² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9338978911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4062811 + ... + 4065108.

It is an arithmetic number, because the mean of its divisors is an integer number (1560560640).

Almost surely, 2^9338978931 is an apocalyptic number.

9338978931 is a deficient number, since it is larger than the sum of its proper divisors (3145506189).

9338978931 is a wasteful number, since it uses less digits than its factorization.

9338978931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8128305.

The product of its digits is 8817984, while the sum is 60.

The square root of 9338978931 is about 96638.3926346046. The cubic root of 9338978931 is about 2105.8776329977.

The spelling of 9338978931 in words is "nine billion, three hundred thirty-eight million, nine hundred seventy-eight thousand, nine hundred thirty-one".