9968187789 has 24 divisors (see below), whose sum is σ = 16464835712. Its totient is φ = 5692848480.

The previous prime is 9968187767. The next prime is 9968187791. The reversal of 9968187789 is 9877818699.

It is not a de Polignac number, because 9968187789 - 2¹³ = 9968179597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9968187289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67959 + ... + 156699.

Almost surely, 2^9968187789 is an apocalyptic number.

It is an amenable number.

9968187789 is a deficient number, since it is larger than the sum of its proper divisors (6496647923).

9968187789 is a wasteful number, since it uses less digits than its factorization.

9968187789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90537 (or 90534 counting only the distinct ones).

The product of its digits is 109734912, while the sum is 72.

The square root of 9968187789 is about 99840.8122412874. The cubic root of 9968187789 is about 2152.1476854608.

The spelling of 9968187789 in words is "nine billion, nine hundred sixty-eight million, one hundred eighty-seven thousand, seven hundred eighty-nine".