1089604562 has 18 divisors (see below), whose sum is σ = 1737469263. Its totient is φ = 512381632.

The previous prime is 1089604543. The next prime is 1089604573. The reversal of 1089604562 is 2654069801.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 1051769761 + 37834801 = 32431^2 + 6151^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=23341.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 792908 + ... + 794280.

Almost surely, 2^1089604562 is an apocalyptic number.

1089604562 is a deficient number, since it is larger than the sum of its proper divisors (647864701).

1089604562 is an frugal number, since it uses more digits than its factorization.

1089604562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782 (or 1392 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1089604562 is about 33009.1587593504. The cubic root of 1089604562 is about 1029.0179982956.

The spelling of 1089604562 in words is "one billion, eighty-nine million, six hundred four thousand, five hundred sixty-two".