1121488451 has 2 divisors, whose sum is σ = 1121488452. Its totient is φ = 1121488450.

The previous prime is 1121488409. The next prime is 1121488469. The reversal of 1121488451 is 1548841211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121488451 - 2²² = 1117294147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121488051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560744225 + 560744226.

It is an arithmetic number, because the mean of its divisors is an integer number (560744226).

Almost surely, 2^1121488451 is an apocalyptic number.

1121488451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121488451 is an equidigital number, since it uses as much as digits as its factorization.

1121488451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10240, while the sum is 35.

The square root of 1121488451 is about 33488.6316680751. The cubic root of 1121488451 is about 1038.9586627383.

The spelling of 1121488451 in words is "one billion, one hundred twenty-one million, four hundred eighty-eight thousand, four hundred fifty-one".