1043665103 has 4 divisors (see below), whose sum is σ = 1123947048. Its totient is φ = 963383160.

The previous prime is 1043665061. The next prime is 1043665111. The reversal of 1043665103 is 3015663401.

It is a happy number.

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 1043665103 - 2¹⁰ = 1043664079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043665163) 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, 40140953 + ... + 40140978.

It is an arithmetic number, because the mean of its divisors is an integer number (280986762).

Almost surely, 2^1043665103 is an apocalyptic number.

1043665103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1043665103 is a deficient number, since it is larger than the sum of its proper divisors (80281945).

1043665103 is an equidigital number, since it uses as much as digits as its factorization.

1043665103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80281944.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1043665103 is about 32305.8060261619. The cubic root of 1043665103 is about 1014.3481794584.

The spelling of 1043665103 in words is "one billion, forty-three million, six hundred sixty-five thousand, one hundred three".