1113556900 has 81 divisors (see below), whose sum is σ = 2504188897. Its totient is φ = 429805600.

The previous prime is 1113556889. The next prime is 1113556901. The reversal of 1113556900 is 96553111.

1113556900 = T₁₈₀ + T₁₈₁ + ... + T₁₈₈₃.

The square root of 1113556900 is 33370.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 400880484 + 712676416 = 20022^2 + 26696^2 .

It is a super-2 number, since 2×1113556900² = 2480017939075220000, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113556901) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15683865 + ... + 15683935.

Almost surely, 2^1113556900 is an apocalyptic number.

1113556900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1113556900 is the 33370-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1113556900

1113556900 is an abundant number, since it is smaller than the sum of its proper divisors (1390631997).

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

1113556900 is an equidigital number, since it uses as much as digits as its factorization.

1113556900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 31.

The cubic root of 1113556900 is about 1036.5035751929.

The spelling of 1113556900 in words is "one billion, one hundred thirteen million, five hundred fifty-six thousand, nine hundred".