1081112445 has 96 divisors (see below), whose sum is σ = 2327470080. Its totient is φ = 453029760.

The previous prime is 1081112443. The next prime is 1081112449. The reversal of 1081112445 is 5442111801.

It is a happy number.

1081112445 is a `hidden beast` number, since 108 + 1 + 112 + 445 = 666.

It is not a de Polignac number, because 1081112445 - 2¹ = 1081112443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081112443) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 182622 + ... + 188448.

It is an arithmetic number, because the mean of its divisors is an integer number (24244480).

Almost surely, 2^1081112445 is an apocalyptic number.

1081112445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1081112445 is an abundant number, since it is smaller than the sum of its proper divisors (1246357635).

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

1081112445 is a wasteful number, since it uses less digits than its factorization.

1081112445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5895 (or 5892 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 1081112445 is about 32880.2744057893. The cubic root of 1081112445 is about 1026.3377164193.

It can be divided in two parts, 1081 and 112445, that added together give a triangular number (113526 = T₄₇₆).

The spelling of 1081112445 in words is "one billion, eighty-one million, one hundred twelve thousand, four hundred forty-five".