1006110991 has 2 divisors, whose sum is σ = 1006110992. Its totient is φ = 1006110990.

The previous prime is 1006110953. The next prime is 1006111019. The reversal of 1006110991 is 1990116001.

It is an a-pointer prime, because the next prime (1006111019) can be obtained adding 1006110991 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1006110991 - 2⁷ = 1006110863 is a prime.

It is a super-2 number, since 2×1006110991² = 2024518652422004162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006117991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503055495 + 503055496.

It is an arithmetic number, because the mean of its divisors is an integer number (503055496).

Almost surely, 2^1006110991 is an apocalyptic number.

1006110991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006110991 is an equidigital number, since it uses as much as digits as its factorization.

1006110991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 28.

The square root of 1006110991 is about 31719.2526866570. The cubic root of 1006110991 is about 1002.0328616731.

Adding to 1006110991 its reverse (1990116001), we get a palindrome (2996226992).

The spelling of 1006110991 in words is "one billion, six million, one hundred ten thousand, nine hundred ninety-one".