1090556849 has 2 divisors, whose sum is σ = 1090556850. Its totient is φ = 1090556848.

The previous prime is 1090556821. The next prime is 1090556867. The reversal of 1090556849 is 9486550901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636653824 + 453903025 = 25232^2 + 21305^2 .

It is a cyclic number.

It is not a de Polignac number, because 1090556849 - 2¹² = 1090552753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1090556809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545278424 + 545278425.

It is an arithmetic number, because the mean of its divisors is an integer number (545278425).

Almost surely, 2^1090556849 is an apocalyptic number.

It is an amenable number.

1090556849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090556849 is an equidigital number, since it uses as much as digits as its factorization.

1090556849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 1090556849 is about 33023.5801965807. The cubic root of 1090556849 is about 1029.3176896271.

The spelling of 1090556849 in words is "one billion, ninety million, five hundred fifty-six thousand, eight hundred forty-nine".