9190989261 has 24 divisors (see below), whose sum is σ = 13788178560. Its totient is φ = 5895298176.

The previous prime is 9190989257. The next prime is 9190989271. The reversal of 9190989261 is 1629890919.

9190989261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9190989261 - 2² = 9190989257 is a prime.

It is a super-2 number, since 2×9190989261² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9190989198 and 9190989207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9190989211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159180 + ... + 209093.

It is an arithmetic number, because the mean of its divisors is an integer number (574507440).

Almost surely, 2^9190989261 is an apocalyptic number.

It is an amenable number.

9190989261 is a deficient number, since it is larger than the sum of its proper divisors (4597189299).

9190989261 is a wasteful number, since it uses less digits than its factorization.

9190989261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368385 (or 368382 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 54.

The square root of 9190989261 is about 95869.6472351912. The cubic root of 9190989261 is about 2094.6947917869.

The spelling of 9190989261 in words is "nine billion, one hundred ninety million, nine hundred eighty-nine thousand, two hundred sixty-one".