1089219809988 has 60 divisors (see below), whose sum is σ = 2849155570492. Its totient is φ = 362853976320.

The previous prime is 1089219809947. The next prime is 1089219810001. The reversal of 1089219809988 is 8899089129801.

It can be written as a sum of positive squares in 2 ways, for example, as 302667223104 + 786552586884 = 550152^2 + 886878^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 477553 + ... + 1551288.

Almost surely, 2^{1089219809988} is an apocalyptic number.

1089219809988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1089219809988 is an abundant number, since it is smaller than the sum of its proper divisors (1759935760504).

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

1089219809988 is a wasteful number, since it uses less digits than its factorization.

1089219809988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030514 (or 2030503 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 72.

The spelling of 1089219809988 in words is "one trillion, eighty-nine billion, two hundred nineteen million, eight hundred nine thousand, nine hundred eighty-eight".