1641103103 has 4 divisors (see below), whose sum is σ = 1661876640. Its totient is φ = 1620329568.

The previous prime is 1641103091. The next prime is 1641103147. The reversal of 1641103103 is 3013011461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3013011461 = 5309 ⋅567529.

It is a cyclic number.

It is not a de Polignac number, because 1641103103 - 2¹⁰ = 1641102079 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 (1641103403) 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, 10386650 + ... + 10386807.

It is an arithmetic number, because the mean of its divisors is an integer number (415469160).

Almost surely, 2^1641103103 is an apocalyptic number.

1641103103 is a deficient number, since it is larger than the sum of its proper divisors (20773537).

1641103103 is an equidigital number, since it uses as much as digits as its factorization.

1641103103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20773536.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1641103103 is about 40510.5307667031. The cubic root of 1641103103 is about 1179.5380512483.

Adding to 1641103103 its reverse (3013011461), we get a palindrome (4654114564).

The spelling of 1641103103 in words is "one billion, six hundred forty-one million, one hundred three thousand, one hundred three".