1103819 has 4 divisors (see below), whose sum is σ = 1105944. Its totient is φ = 1101696.

The previous prime is 1103803. The next prime is 1103849. The reversal of 1103819 is 9183011.

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

It is a cyclic number.

It is not a de Polignac number, because 1103819 - 2⁴ = 1103803 is a prime.

It is a super-2 number, since 2×1103819² = 2436832769522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103794 and 1103803.

It is not an unprimeable number, because it can be changed into a prime (1103849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299 + ... + 1515.

It is an arithmetic number, because the mean of its divisors is an integer number (276486).

2^1103819 is an apocalyptic number.

1103819 is a deficient number, since it is larger than the sum of its proper divisors (2125).

1103819 is an equidigital number, since it uses as much as digits as its factorization.

1103819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1103819 is about 1050.6279074915. The cubic root of 1103819 is about 103.3473365229.

The spelling of 1103819 in words is "one million, one hundred three thousand, eight hundred nineteen".