1089110001 has 32 divisors (see below), whose sum is σ = 1756119040. Its totient is φ = 586497024.

The previous prime is 1089109979. The next prime is 1089110041. The reversal of 1089110001 is 1000119801.

It is not a de Polignac number, because 1089110001 - 2¹³ = 1089101809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1089110001.

It is not an unprimeable number, because it can be changed into a prime (1089110041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69936 + ... + 84078.

It is an arithmetic number, because the mean of its divisors is an integer number (54878720).

Almost surely, 2^1089110001 is an apocalyptic number.

It is an amenable number.

1089110001 is a deficient number, since it is larger than the sum of its proper divisors (667009039).

1089110001 is a wasteful number, since it uses less digits than its factorization.

1089110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14365.

The product of its (nonzero) digits is 72, while the sum is 21.

The square root of 1089110001 is about 33001.6666397320. Note that the first 4 decimals coincide. The cubic root of 1089110001 is about 1028.8622876203.

Adding to 1089110001 its reverse (1000119801), we get a palindrome (2089229802).

The spelling of 1089110001 in words is "one billion, eighty-nine million, one hundred ten thousand, one".