1089118464 has 216 divisors, whose sum is σ = 3524084928. Its totient is φ = 292454400.

The previous prime is 1089118453. The next prime is 1089118469. The reversal of 1089118464 is 4648119801.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1089118469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1553314 + ... + 1554014.

It is an arithmetic number, because the mean of its divisors is an integer number (16315208).

Almost surely, 2^1089118464 is an apocalyptic number.

1089118464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089118464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1762042464).

1089118464 is an abundant number, since it is smaller than the sum of its proper divisors (2434966464).

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

1089118464 is an equidigital number, since it uses as much as digits as its factorization.

1089118464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 1089118464 is about 33001.7948602799. The cubic root of 1089118464 is about 1028.8649525605.

The spelling of 1089118464 in words is "one billion, eighty-nine million, one hundred eighteen thousand, four hundred sixty-four".