1100010091 has 2 divisors, whose sum is σ = 1100010092. Its totient is φ = 1100010090.

The previous prime is 1100010077. The next prime is 1100010097. The reversal of 1100010091 is 1900100011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1100010091 - 2²¹ = 1097912939 is a prime.

It is not a weakly prime, because it can be changed into another prime (1100010097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550005045 + 550005046.

It is an arithmetic number, because the mean of its divisors is an integer number (550005046).

Almost surely, 2^1100010091 is an apocalyptic number.

1100010091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100010091 is an equidigital number, since it uses as much as digits as its factorization.

1100010091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 1100010091 is about 33166.4000307540. The cubic root of 1100010091 is about 1032.2832720342.

The spelling of 1100010091 in words is "one billion, one hundred million, ten thousand, ninety-one".