1109489481 has 15 divisors (see below), whose sum is σ = 1657833463. Its totient is φ = 739459800.

The previous prime is 1109489471. The next prime is 1109489501. The reversal of 1109489481 is 1849849011.

The square root of 1109489481 is 33309.

It is a perfect power (a square), and thus also a powerful number.

1109489481 is a `hidden beast` number, since 1 + 1 + 0 + 94 + 89 + 481 = 666.

It can be written as a sum of positive squares in only one way, i.e., 446941881 + 662547600 = 21141^2 + 25740^2 .

It is not a de Polignac number, because 1109489481 - 2¹¹ = 1109487433 is a prime.

It is a super-2 number, since 2×1109489481² = 2461933816899298722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1109489471) by changing a digit.

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 14 ways as a sum of consecutive naturals, for example, 297931 + ... + 301631.

Almost surely, 2^1109489481 is an apocalyptic number.

1109489481 is the 33309-th square number.

1109489481 is the 16655-th centered octagonal number.

It is an amenable number.

1109489481 is a deficient number, since it is larger than the sum of its proper divisors (548343982).

1109489481 is an frugal number, since it uses more digits than its factorization.

1109489481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7414 (or 3704 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The cubic root of 1109489481 is about 1035.2400451417.

Multiplying 1109489481 by its product of nonzero digits (82944), we get a square (92025495512064 = 9592992²).

The spelling of 1109489481 in words is "one billion, one hundred nine million, four hundred eighty-nine thousand, four hundred eighty-one".