1111603104 has 72 divisors (see below), whose sum is σ = 3169186020. Its totient is φ = 369589248.

The previous prime is 1111603093. The next prime is 1111603109. The reversal of 1111603104 is 4013061111.

It can be written as a sum of positive squares in 2 ways, for example, as 1027330704 + 84272400 = 32052^2 + 9180^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1111603104² = 2471322921644869632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1111603109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113074 + ... + 122510.

Almost surely, 2^1111603104 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 1111603104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1584593010).

1111603104 is an abundant number, since it is smaller than the sum of its proper divisors (2057582916).

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

1111603104 is a wasteful number, since it uses less digits than its factorization.

1111603104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9862 (or 9851 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1111603104 is about 33340.7124099051. The cubic root of 1111603104 is about 1035.8970197227.

Adding to 1111603104 its reverse (4013061111), we get a palindrome (5124664215).

The spelling of 1111603104 in words is "one billion, one hundred eleven million, six hundred three thousand, one hundred four".