10928191009 has 2 divisors, whose sum is σ = 10928191010. Its totient is φ = 10928191008.

The previous prime is 10928191003. The next prime is 10928191061. The reversal of 10928191009 is 90019182901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10456085025 + 472105984 = 102255^2 + 21728^2 .

It is a cyclic number.

It is not a de Polignac number, because 10928191009 - 2¹⁹ = 10927666721 is a prime.

It is not a weakly prime, because it can be changed into another prime (10928191003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5464095504 + 5464095505.

It is an arithmetic number, because the mean of its divisors is an integer number (5464095505).

Almost surely, 2^10928191009 is an apocalyptic number.

It is an amenable number.

10928191009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10928191009 is an equidigital number, since it uses as much as digits as its factorization.

10928191009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 40.

The spelling of 10928191009 in words is "ten billion, nine hundred twenty-eight million, one hundred ninety-one thousand, nine".