1113553872 has 40 divisors (see below), whose sum is σ = 3196313280. Its totient is φ = 371184480.

The previous prime is 1113553871. The next prime is 1113553877. The reversal of 1113553872 is 2783553111.

It is a happy number.

1113553872 is a `hidden beast` number, since 1 + 113 + 5 + 538 + 7 + 2 = 666.

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 (1113553871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1288404 + ... + 1289267.

It is an arithmetic number, because the mean of its divisors is an integer number (79907832).

Almost surely, 2^1113553872 is an apocalyptic number.

1113553872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1113553872 is an abundant number, since it is smaller than the sum of its proper divisors (2082759408).

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

1113553872 is a wasteful number, since it uses less digits than its factorization.

1113553872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577688 (or 2577676 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 1113553872 is about 33369.9546298763. The cubic root of 1113553872 is about 1036.5026357003.

The spelling of 1113553872 in words is "one billion, one hundred thirteen million, five hundred fifty-three thousand, eight hundred seventy-two".