1121015449 has 2 divisors, whose sum is σ = 1121015450. Its totient is φ = 1121015448.

The previous prime is 1121015443. The next prime is 1121015453. The reversal of 1121015449 is 9445101211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 854509824 + 266505625 = 29232^2 + 16325^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121015449 - 2¹⁷ = 1120884377 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121015443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560507724 + 560507725.

It is an arithmetic number, because the mean of its divisors is an integer number (560507725).

Almost surely, 2^1121015449 is an apocalyptic number.

It is an amenable number.

1121015449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121015449 is an equidigital number, since it uses as much as digits as its factorization.

1121015449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1121015449 is about 33481.5687953835. The cubic root of 1121015449 is about 1038.8125775275.

The spelling of 1121015449 in words is "one billion, one hundred twenty-one million, fifteen thousand, four hundred forty-nine".