1089527642 has 12 divisors (see below), whose sum is σ = 1901114730. Its totient is φ = 466940376.

The previous prime is 1089527629. The next prime is 1089527683. The reversal of 1089527642 is 2467259801.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1076430481 + 13097161 = 32809^2 + 3619^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1089527593 and 1089527602.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5558717 + ... + 5558912.

Almost surely, 2^1089527642 is an apocalyptic number.

1089527642 is a deficient number, since it is larger than the sum of its proper divisors (811587088).

1089527642 is a wasteful number, since it uses less digits than its factorization.

1089527642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11117645 (or 11117638 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 1089527642 is about 33007.9936076097. The cubic root of 1089527642 is about 1028.9937834169.

The spelling of 1089527642 in words is "one billion, eighty-nine million, five hundred twenty-seven thousand, six hundred forty-two".