9810989117 has 2 divisors, whose sum is σ = 9810989118. Its totient is φ = 9810989116.

The previous prime is 9810989113. The next prime is 9810989129. The reversal of 9810989117 is 7119890189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9306267961 + 504721156 = 96469^2 + 22466^2 .

It is a cyclic number.

It is not a de Polignac number, because 9810989117 - 2² = 9810989113 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9810989113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4905494558 + 4905494559.

It is an arithmetic number, because the mean of its divisors is an integer number (4905494559).

Almost surely, 2^9810989117 is an apocalyptic number.

It is an amenable number.

9810989117 is a deficient number, since it is larger than the sum of its proper divisors (1).

9810989117 is an equidigital number, since it uses as much as digits as its factorization.

9810989117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 53.

The square root of 9810989117 is about 99050.4372378032. The cubic root of 9810989117 is about 2140.7745410871.

The spelling of 9810989117 in words is "nine billion, eight hundred ten million, nine hundred eighty-nine thousand, one hundred seventeen".