1089771005 has 8 divisors (see below), whose sum is σ = 1329890400. Its totient is φ = 857040016.

The previous prime is 1089770989. The next prime is 1089771017. The reversal of 1089771005 is 5001779801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1089771005 - 2⁴ = 1089770989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1089771005.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1846775 + ... + 1847364.

It is an arithmetic number, because the mean of its divisors is an integer number (166236300).

Almost surely, 2^1089771005 is an apocalyptic number.

It is an amenable number.

1089771005 is a deficient number, since it is larger than the sum of its proper divisors (240119395).

1089771005 is an equidigital number, since it uses as much as digits as its factorization.

1089771005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3694203.

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 1089771005 is about 33011.6798269946. The cubic root of 1089771005 is about 1029.0703916526.

The spelling of 1089771005 in words is "one billion, eighty-nine million, seven hundred seventy-one thousand, five".