9618989384 has 8 divisors (see below), whose sum is σ = 18035605110. Its totient is φ = 4809494688.

The previous prime is 9618989371. The next prime is 9618989407. The reversal of 9618989384 is 4839898169.

It can be written as a sum of positive squares in only one way, i.e., 8050037284 + 1568952100 = 89722^2 + 39610^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 9618989384.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601186829 + ... + 601186844.

Almost surely, 2^9618989384 is an apocalyptic number.

It is an amenable number.

9618989384 is a deficient number, since it is larger than the sum of its proper divisors (8416615726).

9618989384 is a wasteful number, since it uses less digits than its factorization.

9618989384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202373679 (or 1202373675 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 65.

The square root of 9618989384 is about 98076.4466322062. The cubic root of 9618989384 is about 2126.7175509336.

The spelling of 9618989384 in words is "nine billion, six hundred eighteen million, nine hundred eighty-nine thousand, three hundred eighty-four".