1100140544 has 52 divisors (see below), whose sum is σ = 2209309284. Its totient is φ = 547749888.

The previous prime is 1100140537. The next prime is 1100140583. The reversal of 1100140544 is 4450410011.

It can be written as a sum of positive squares in 2 ways, for example, as 411602944 + 688537600 = 20288^2 + 26240^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1379954 + ... + 1380750.

It is an arithmetic number, because the mean of its divisors is an integer number (42486717).

Almost surely, 2^1100140544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100140544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104654642).

1100140544 is an abundant number, since it is smaller than the sum of its proper divisors (1109168740).

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

1100140544 is an frugal number, since it uses more digits than its factorization.

1100140544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1100140544 is about 33168.3666164012. The cubic root of 1100140544 is about 1032.3240774558.

Adding to 1100140544 its reverse (4450410011), we get a palindrome (5550550555).

The spelling of 1100140544 in words is "one billion, one hundred million, one hundred forty thousand, five hundred forty-four".