1081380672 has 112 divisors (see below), whose sum is σ = 3231489600. Its totient is φ = 354516480.

The previous prime is 1081380661. The next prime is 1081380679. The reversal of 1081380672 is 2760831801.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081380679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100279 + ... + 110537.

Almost surely, 2^1081380672 is an apocalyptic number.

1081380672 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 1081380672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1615744800).

1081380672 is an abundant number, since it is smaller than the sum of its proper divisors (2150108928).

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

1081380672 is a wasteful number, since it uses less digits than its factorization.

1081380672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10341 (or 10325 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1081380672 is about 32884.3529965240. The cubic root of 1081380672 is about 1026.4225884799.

The spelling of 1081380672 in words is "one billion, eighty-one million, three hundred eighty thousand, six hundred seventy-two".