1103816165 has 4 divisors (see below), whose sum is σ = 1324579404. Its totient is φ = 883052928.

The previous prime is 1103816143. The next prime is 1103816177. The reversal of 1103816165 is 5616183011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 299186209 + 804629956 = 17297^2 + 28366^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103816165 is a prime.

It is a super-2 number, since 2×1103816165² = 2436820252230614450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110381612 + ... + 110381621.

It is an arithmetic number, because the mean of its divisors is an integer number (331144851).

Almost surely, 2^1103816165 is an apocalyptic number.

It is an amenable number.

1103816165 is a deficient number, since it is larger than the sum of its proper divisors (220763239).

1103816165 is an equidigital number, since it uses as much as digits as its factorization.

1103816165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220763238.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 1103816165 is about 33223.7289448370. The cubic root of 1103816165 is about 1033.4724804525.

Adding to 1103816165 its reverse (5616183011), we get a palindrome (6719999176).

The spelling of 1103816165 in words is "one billion, one hundred three million, eight hundred sixteen thousand, one hundred sixty-five".