1089091048 has 8 divisors (see below), whose sum is σ = 2042045730. Its totient is φ = 544545520.

The previous prime is 1089091021. The next prime is 1089091063. The reversal of 1089091048 is 8401909801.

It can be written as a sum of positive squares in only one way, i.e., 1087548484 + 1542564 = 32978^2 + 1242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1089091048² = 2372238621667476608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1089091048.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68068183 + ... + 68068198.

Almost surely, 2^1089091048 is an apocalyptic number.

It is an amenable number.

1089091048 is a deficient number, since it is larger than the sum of its proper divisors (952954682).

1089091048 is a wasteful number, since it uses less digits than its factorization.

1089091048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136136387 (or 136136383 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 1089091048 is about 33001.3794863184. The cubic root of 1089091048 is about 1028.8563194016.

The spelling of 1089091048 in words is "one billion, eighty-nine million, ninety-one thousand, forty-eight".