1111002091 has 2 divisors, whose sum is σ = 1111002092. Its totient is φ = 1111002090.

The previous prime is 1111002083. The next prime is 1111002103. The reversal of 1111002091 is 1902001111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111002091 - 2³ = 1111002083 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111002491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555501045 + 555501046.

It is an arithmetic number, because the mean of its divisors is an integer number (555501046).

Almost surely, 2^1111002091 is an apocalyptic number.

1111002091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111002091 is an equidigital number, since it uses as much as digits as its factorization.

1111002091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 1111002091 is about 33331.6979915515. The cubic root of 1111002091 is about 1035.7102924600.

The spelling of 1111002091 in words is "one billion, one hundred eleven million, two thousand, ninety-one".