1010010091 has 2 divisors, whose sum is σ = 1010010092. Its totient is φ = 1010010090.

The previous prime is 1010010083. The next prime is 1010010143. The reversal of 1010010091 is 1900100101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1010010091 - 2³ = 1010010083 is a prime.

It is not a weakly prime, because it can be changed into another prime (1010010011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505005045 + 505005046.

It is an arithmetic number, because the mean of its divisors is an integer number (505005046).

Almost surely, 2^1010010091 is an apocalyptic number.

1010010091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010010091 is an equidigital number, since it uses as much as digits as its factorization.

1010010091 is an evil number, because the sum of its binary digits is even.

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

The square root of 1010010091 is about 31780.6559246344. The cubic root of 1010010091 is about 1003.3256249584.

Adding to 1010010091 its reverse (1900100101), we get a palindrome (2910110192).

The spelling of 1010010091 in words is "one billion, ten million, ten thousand, ninety-one".