1089319090 has 16 divisors (see below), whose sum is σ = 1992919320. Its totient is φ = 428584320.

The previous prime is 1089319079. The next prime is 1089319157. The reversal of 1089319090 is 909139801.

It can be written as a sum of positive squares in 4 ways, for example, as 315311049 + 774008041 = 17757^2 + 27821^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 892275 + ... + 893494.

Almost surely, 2^1089319090 is an apocalyptic number.

1089319090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1089319090 is a deficient number, since it is larger than the sum of its proper divisors (903600230).

1089319090 is a wasteful number, since it uses less digits than its factorization.

1089319090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785837.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 1089319090 is about 33004.8343428656. The cubic root of 1089319090 is about 1028.9281242580.

The spelling of 1089319090 in words is "one billion, eighty-nine million, three hundred nineteen thousand, ninety".