1115901443 has 2 divisors, whose sum is σ = 1115901444. Its totient is φ = 1115901442.

The previous prime is 1115901421. The next prime is 1115901473. The reversal of 1115901443 is 3441095111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1115901443 - 2¹⁸ = 1115639299 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1115901473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557950721 + 557950722.

It is an arithmetic number, because the mean of its divisors is an integer number (557950722).

Almost surely, 2^1115901443 is an apocalyptic number.

1115901443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115901443 is an equidigital number, since it uses as much as digits as its factorization.

1115901443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1115901443 is about 33405.1110310982. Note that the first 3 decimals coincide. The cubic root of 1115901443 is about 1037.2305021800.

Adding to 1115901443 its reverse (3441095111), we get a palindrome (4556996554).

The spelling of 1115901443 in words is "one billion, one hundred fifteen million, nine hundred one thousand, four hundred forty-three".