9918943376 has 10 divisors (see below), whose sum is σ = 19217952822. Its totient is φ = 4959471680.

The previous prime is 9918943373. The next prime is 9918943379. The reversal of 9918943376 is 6733498199.

It is an interprime number because it is at equal distance from previous prime (9918943373) and next prime (9918943379).

It can be written as a sum of positive squares in only one way, i.e., 9339289600 + 579653776 = 96640^2 + 24076^2 .

It is not an unprimeable number, because it can be changed into a prime (9918943373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309966965 + ... + 309966996.

Almost surely, 2^9918943376 is an apocalyptic number.

It is an amenable number.

9918943376 is a deficient number, since it is larger than the sum of its proper divisors (9299009446).

9918943376 is a wasteful number, since it uses less digits than its factorization.

9918943376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619933969 (or 619933963 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 59.

The square root of 9918943376 is about 99593.8922625278. The cubic root of 9918943376 is about 2148.5978509403.

The spelling of 9918943376 in words is "nine billion, nine hundred eighteen million, nine hundred forty-three thousand, three hundred seventy-six".