1088802009 has 27 divisors (see below), whose sum is σ = 1673254687. Its totient is φ = 682113984.

The previous prime is 1088801977. The next prime is 1088802019. The reversal of 1088802009 is 9002088801.

The square root of 1088802009 is 32997.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 847683225 + 241118784 = 29115^2 + 15528^2 .

It is not a de Polignac number, because 1088802009 - 2⁵ = 1088801977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1088802019) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1682524 + ... + 1683170.

Almost surely, 2^1088802009 is an apocalyptic number.

1088802009 is the 32997-th square number.

1088802009 is the 16499-th centered octagonal number.

It is an amenable number.

1088802009 is a deficient number, since it is larger than the sum of its proper divisors (584452678).

1088802009 is an frugal number, since it uses more digits than its factorization.

1088802009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The cubic root of 1088802009 is about 1028.7652936746.

Multiplying 1088802009 by its sum of digits (36), we get a square (39196872324 = 197982²).

Multiplying 1088802009 by its product of nonzero digits (9216), we get a square (10034399314944 = 3167712²).

It can be divided in two parts, 108880 and 2009, that added together give a square (110889 = 333²).

The spelling of 1088802009 in words is "one billion, eighty-eight million, eight hundred two thousand, nine".