1109489664 has 96 divisors (see below), whose sum is σ = 2992626000. Its totient is φ = 365494272.

The previous prime is 1109489621. The next prime is 1109489671. The reversal of 1109489664 is 4669849011.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×1109489664³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545802 + ... + 547830.

Almost surely, 2^1109489664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1109489664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1496313000).

1109489664 is an abundant number, since it is smaller than the sum of its proper divisors (1883136336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1109489664 is an equidigital number, since it uses as much as digits as its factorization.

1109489664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143 (or 2123 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 1109489664 is about 33309.0027470052. The cubic root of 1109489664 is about 1035.2401020595.

The spelling of 1109489664 in words is "one billion, one hundred nine million, four hundred eighty-nine thousand, six hundred sixty-four".