1113155500 has 24 divisors (see below), whose sum is σ = 2431132704. Its totient is φ = 445262000.

The previous prime is 1113155497. The next prime is 1113155503. The reversal of 1113155500 is 55513111.

It is an interprime number because it is at equal distance from previous prime (1113155497) and next prime (1113155503).

It is not an unprimeable number, because it can be changed into a prime (1113155503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1112656 + ... + 1113655.

It is an arithmetic number, because the mean of its divisors is an integer number (101297196).

Almost surely, 2^1113155500 is an apocalyptic number.

1113155500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113155500 is an abundant number, since it is smaller than the sum of its proper divisors (1317977204).

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

1113155500 is a wasteful number, since it uses less digits than its factorization.

1113155500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226330 (or 2226318 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 22.

The square root of 1113155500 is about 33363.9850737288. The cubic root of 1113155500 is about 1036.3790186073.

Adding to 1113155500 its reverse (55513111), we get a palindrome (1168668611).

The spelling of 1113155500 in words is "one billion, one hundred thirteen million, one hundred fifty-five thousand, five hundred".