1121849291 has 2 divisors, whose sum is σ = 1121849292. Its totient is φ = 1121849290.

The previous prime is 1121849263. The next prime is 1121849303. The reversal of 1121849291 is 1929481211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121849291 - 2¹⁸ = 1121587147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121849591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560924645 + 560924646.

It is an arithmetic number, because the mean of its divisors is an integer number (560924646).

Almost surely, 2^1121849291 is an apocalyptic number.

1121849291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121849291 is an equidigital number, since it uses as much as digits as its factorization.

1121849291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 38.

The square root of 1121849291 is about 33494.0187346935. The cubic root of 1121849291 is about 1039.0700794432.

The spelling of 1121849291 in words is "one billion, one hundred twenty-one million, eight hundred forty-nine thousand, two hundred ninety-one".