1121454391 has 2 divisors, whose sum is σ = 1121454392. Its totient is φ = 1121454390.

The previous prime is 1121454377. The next prime is 1121454403. The reversal of 1121454391 is 1934541211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121454391 - 2¹⁷ = 1121323319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121454091) 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, 560727195 + 560727196.

It is an arithmetic number, because the mean of its divisors is an integer number (560727196).

Almost surely, 2^1121454391 is an apocalyptic number.

1121454391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121454391 is an equidigital number, since it uses as much as digits as its factorization.

1121454391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 31.

The square root of 1121454391 is about 33488.1231334334. The cubic root of 1121454391 is about 1038.9481447848.

The spelling of 1121454391 in words is "one billion, one hundred twenty-one million, four hundred fifty-four thousand, three hundred ninety-one".