1089742288 has 20 divisors (see below), whose sum is σ = 2112306148. Its totient is φ = 544631040.

The previous prime is 1089742273. The next prime is 1089742289. The reversal of 1089742288 is 8822479801.

It can be written as a sum of positive squares in 2 ways, for example, as 630411664 + 459330624 = 25108^2 + 21432^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089742289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25798 + ... + 53338.

Almost surely, 2^1089742288 is an apocalyptic number.

It is an amenable number.

1089742288 is a deficient number, since it is larger than the sum of its proper divisors (1022563860).

1089742288 is a wasteful number, since it uses less digits than its factorization.

1089742288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30022 (or 30016 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 49.

The square root of 1089742288 is about 33011.2448720129. The cubic root of 1089742288 is about 1029.0613524221.

The spelling of 1089742288 in words is "one billion, eighty-nine million, seven hundred forty-two thousand, two hundred eighty-eight".