1630103 has 4 divisors (see below), whose sum is σ = 1656888. Its totient is φ = 1603320.

The previous prime is 1630093. The next prime is 1630117. The reversal of 1630103 is 3010361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3010361 = 563 ⋅5347.

It is a cyclic number.

It is not a de Polignac number, because 1630103 - 2²⁰ = 581527 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630133) 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, 13301 + ... + 13422.

It is an arithmetic number, because the mean of its divisors is an integer number (414222).

2^1630103 is an apocalyptic number.

1630103 is a deficient number, since it is larger than the sum of its proper divisors (26785).

1630103 is an equidigital number, since it uses as much as digits as its factorization.

1630103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26784.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1630103 is about 1276.7548707563. The cubic root of 1630103 is about 117.6896710295.

Adding to 1630103 its reverse (3010361), we get a palindrome (4640464).

The spelling of 1630103 in words is "one million, six hundred thirty thousand, one hundred three".