9949156768 has 12 divisors (see below), whose sum is σ = 19587402450. Its totient is φ = 4974578368.

The previous prime is 9949156757. The next prime is 9949156783. The reversal of 9949156768 is 8676519499.

It can be written as a sum of positive squares in only one way, i.e., 5147775504 + 4801381264 = 71748^2 + 69292^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155455543 + ... + 155455606.

Almost surely, 2^9949156768 is an apocalyptic number.

It is an amenable number.

9949156768 is a deficient number, since it is larger than the sum of its proper divisors (9638245682).

9949156768 is a wasteful number, since it uses less digits than its factorization.

9949156768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310911159 (or 310911151 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 64.

The square root of 9949156768 is about 99745.4598866535. The cubic root of 9949156768 is about 2150.7772036371. Note that the first 3 decimals are identical.

The spelling of 9949156768 in words is "nine billion, nine hundred forty-nine million, one hundred fifty-six thousand, seven hundred sixty-eight".