1089163564 has 12 divisors (see below), whose sum is σ = 1906315488. Its totient is φ = 544502000.

The previous prime is 1089163549. The next prime is 1089163567. The reversal of 1089163564 is 4653619801.

It is a self number, because there is not a number n which added to its sum of digits gives 1089163564.

It is not an unprimeable number, because it can be changed into a prime (1089163567) 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 in 3 ways as a sum of consecutive naturals, for example, 19389 + ... + 50539.

It is an arithmetic number, because the mean of its divisors is an integer number (158859624).

Almost surely, 2^1089163564 is an apocalyptic number.

It is an amenable number.

1089163564 is a deficient number, since it is larger than the sum of its proper divisors (817151924).

1089163564 is a wasteful number, since it uses less digits than its factorization.

1089163564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39896 (or 39894 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 1089163564 is about 33002.4781493754. The cubic root of 1089163564 is about 1028.8791540058.

The spelling of 1089163564 in words is "one billion, eighty-nine million, one hundred sixty-three thousand, five hundred sixty-four".