1103818365 has 24 divisors (see below), whose sum is σ = 2060462040. Its totient is φ = 543417984.

The previous prime is 1103818361. The next prime is 1103818379. The reversal of 1103818365 is 5638183011.

It can be written as a sum of positive squares in 4 ways, for example, as 30404196 + 1073414169 = 5514^2 + 32763^2 .

It is not a de Polignac number, because 1103818365 - 2² = 1103818361 is a prime.

It is a super-3 number, since 3×1103818365³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103818361) 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, 942850 + ... + 944019.

It is an arithmetic number, because the mean of its divisors is an integer number (85852585).

Almost surely, 2^1103818365 is an apocalyptic number.

1103818365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1103818365 is a deficient number, since it is larger than the sum of its proper divisors (956643675).

1103818365 is a wasteful number, since it uses less digits than its factorization.

1103818365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886893 (or 1886890 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1103818365 is about 33223.7620536868. The cubic root of 1103818365 is about 1033.4731670517.

It can be divided in two parts, 11038 and 18365, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 1103818365 in words is "one billion, one hundred three million, eight hundred eighteen thousand, three hundred sixty-five".