1089871038 has 112 divisors (see below), whose sum is σ = 2556833040. Its totient is φ = 347960448.

The previous prime is 1089871019. The next prime is 1089871051. The reversal of 1089871038 is 8301789801.

It is a junction number, because it is equal to n+sod(n) for n = 1089870984 and 1089871002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 4801081 + ... + 4801307.

Almost surely, 2^1089871038 is an apocalyptic number.

1089871038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089871038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1278416520).

1089871038 is an abundant number, since it is smaller than the sum of its proper divisors (1466962002).

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

1089871038 is an equidigital number, since it uses as much as digits as its factorization.

1089871038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The square root of 1089871038 is about 33013.1949074912. The cubic root of 1089871038 is about 1029.1018777320.

The spelling of 1089871038 in words is "one billion, eighty-nine million, eight hundred seventy-one thousand, thirty-eight".