9178981249 has 9 divisors (see below), whose sum is σ = 9255392643. Its totient is φ = 9103197912.

The previous prime is 9178981223. The next prime is 9178981267. The reversal of 9178981249 is 9421898719.

The square root of 9178981249 is 95807.

It is a perfect power (a square), and thus also a powerful number.

9178981249 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1075380849 + 8103600400 = 32793^2 + 90020^2 .

It is not a de Polignac number, because 9178981249 - 2⁷ = 9178981121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9178981193 and 9178981202.

It is not an unprimeable number, because it can be changed into a prime (9178987249) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14274922 + ... + 14275564.

Almost surely, 2^9178981249 is an apocalyptic number.

9178981249 is the 95807-th square number.

9178981249 is the 47904-th centered octagonal number.

It is an amenable number.

9178981249 is a deficient number, since it is larger than the sum of its proper divisors (76411394).

9178981249 is an frugal number, since it uses more digits than its factorization.

9178981249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584 (or 792 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 58.

The cubic root of 9178981249 is about 2093.7821558124.

The spelling of 9178981249 in words is "nine billion, one hundred seventy-eight million, nine hundred eighty-one thousand, two hundred forty-nine".