1116203445 has 24 divisors (see below), whose sum is σ = 2211146496. Its totient is φ = 510264288.

The previous prime is 1116203401. The next prime is 1116203449. The reversal of 1116203445 is 5443026111.

It is a happy number.

1116203445 is a `hidden beast` number, since 1 + 1 + 1 + 620 + 34 + 4 + 5 = 666.

It is not a de Polignac number, because 1116203445 - 2¹⁶ = 1116137909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116203449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1771437 + ... + 1772066.

It is an arithmetic number, because the mean of its divisors is an integer number (92131104).

Almost surely, 2^1116203445 is an apocalyptic number.

1116203445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1116203445 is a deficient number, since it is larger than the sum of its proper divisors (1094943051).

1116203445 is a wasteful number, since it uses less digits than its factorization.

1116203445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543521 (or 3543518 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1116203445 is about 33409.6310216081. The cubic root of 1116203445 is about 1037.3240640365.

Adding to 1116203445 its reverse (5443026111), we get a palindrome (6559229556).

The spelling of 1116203445 in words is "one billion, one hundred sixteen million, two hundred three thousand, four hundred forty-five".