1089208911 has 16 divisors (see below), whose sum is σ = 1700229888. Its totient is φ = 607224000.

The previous prime is 1089208873. The next prime is 1089208931. The reversal of 1089208911 is 1198029801.

It is not a de Polignac number, because 1089208911 - 2⁶ = 1089208847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1089208911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089208931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631665 + ... + 633386.

It is an arithmetic number, because the mean of its divisors is an integer number (106264368).

Almost surely, 2^1089208911 is an apocalyptic number.

1089208911 is a deficient number, since it is larger than the sum of its proper divisors (611020977).

1089208911 is a wasteful number, since it uses less digits than its factorization.

1089208911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265102.

The product of its (nonzero) digits is 10368, while the sum is 39.

The square root of 1089208911 is about 33003.1651663897. The cubic root of 1089208911 is about 1028.8934328332.

The spelling of 1089208911 in words is "one billion, eighty-nine million, two hundred eight thousand, nine hundred eleven".