9108989748 has 18 divisors (see below), whose sum is σ = 23025501954. Its totient is φ = 3036329904.

The previous prime is 9108989741. The next prime is 9108989779. The reversal of 9108989748 is 8479898019.

It can be written as a sum of positive squares in only one way, i.e., 4997358864 + 4111630884 = 70692^2 + 64122^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9108989741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126513711 + ... + 126513782.

It is an arithmetic number, because the mean of its divisors is an integer number (1279194553).

Almost surely, 2^9108989748 is an apocalyptic number.

It is an amenable number.

9108989748 is an abundant number, since it is smaller than the sum of its proper divisors (13916512206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9108989748 is a wasteful number, since it uses less digits than its factorization.

9108989748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253027503 (or 253027498 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 63.

The square root of 9108989748 is about 95441.0275929592. The cubic root of 9108989748 is about 2088.4467407382.

The spelling of 9108989748 in words is "nine billion, one hundred eight million, nine hundred eighty-nine thousand, seven hundred forty-eight".