1093901789 has 2 divisors, whose sum is σ = 1093901790. Its totient is φ = 1093901788.

The previous prime is 1093901777. The next prime is 1093901791. The reversal of 1093901789 is 9871093901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 852348025 + 241553764 = 29195^2 + 15542^2 .

It is a cyclic number.

It is not a de Polignac number, because 1093901789 - 2⁴ = 1093901773 is a prime.

It is a super-2 number, since 2×1093901789² = 2393242247954801042, which contains 22 as substring.

Together with 1093901791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1093901719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 546950894 + 546950895.

It is an arithmetic number, because the mean of its divisors is an integer number (546950895).

Almost surely, 2^1093901789 is an apocalyptic number.

It is an amenable number.

1093901789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1093901789 is an equidigital number, since it uses as much as digits as its factorization.

1093901789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 47.

The square root of 1093901789 is about 33074.1861426702. The cubic root of 1093901789 is about 1030.3689849017.

The spelling of 1093901789 in words is "one billion, ninety-three million, nine hundred one thousand, seven hundred eighty-nine".