1090546661 has 2 divisors, whose sum is σ = 1090546662. Its totient is φ = 1090546660.

The previous prime is 1090546643. The next prime is 1090546663. The reversal of 1090546661 is 1666450901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1077808900 + 12737761 = 32830^2 + 3569^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1090546661 is a prime.

It is a Sophie Germain prime.

Together with 1090546663, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1090546663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545273330 + 545273331.

It is an arithmetic number, because the mean of its divisors is an integer number (545273331).

Almost surely, 2^1090546661 is an apocalyptic number.

It is an amenable number.

1090546661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090546661 is an equidigital number, since it uses as much as digits as its factorization.

1090546661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1090546661 is about 33023.4259428061. The cubic root of 1090546661 is about 1029.3144843162.

The spelling of 1090546661 in words is "one billion, ninety million, five hundred forty-six thousand, six hundred sixty-one".