1089888912 has 160 divisors (see below), whose sum is σ = 3588936960. Its totient is φ = 310210560.

The previous prime is 1089888901. The next prime is 1089888913. The reversal of 1089888912 is 2198889801.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089888913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1066962 + ... + 1067982.

It is an arithmetic number, because the mean of its divisors is an integer number (22430856).

Almost surely, 2^1089888912 is an apocalyptic number.

1089888912 is a gapful number since it is divisible by the number (12) 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 1089888912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1794468480).

1089888912 is an abundant number, since it is smaller than the sum of its proper divisors (2499048048).

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

1089888912 is a wasteful number, since it uses less digits than its factorization.

1089888912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398 (or 1386 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 54.

The square root of 1089888912 is about 33013.4656163209. The cubic root of 1089888912 is about 1029.1075034943.

The spelling of 1089888912 in words is "one billion, eighty-nine million, eight hundred eighty-eight thousand, nine hundred twelve".