1121494009 has 2 divisors, whose sum is σ = 1121494010. Its totient is φ = 1121494008.

The previous prime is 1121493979. The next prime is 1121494027. The reversal of 1121494009 is 9004941211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 907515625 + 213978384 = 30125^2 + 14628^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121494009 - 2⁵ = 1121493977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121495009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560747004 + 560747005.

It is an arithmetic number, because the mean of its divisors is an integer number (560747005).

Almost surely, 2^1121494009 is an apocalyptic number.

It is an amenable number.

1121494009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121494009 is an equidigital number, since it uses as much as digits as its factorization.

1121494009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1121494009 is about 33488.7146513568. The cubic root of 1121494009 is about 1038.9603790653.

The spelling of 1121494009 in words is "one billion, one hundred twenty-one million, four hundred ninety-four thousand, nine".