1605230103 has 4 divisors (see below), whose sum is σ = 2140306808. Its totient is φ = 1070153400.

The previous prime is 1605230059. The next prime is 1605230141. The reversal of 1605230103 is 3010325061.

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

It is not a de Polignac number, because 1605230103 - 2¹⁷ = 1605099031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1605230103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605230503) 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, 267538348 + ... + 267538353.

It is an arithmetic number, because the mean of its divisors is an integer number (535076702).

Almost surely, 2^1605230103 is an apocalyptic number.

1605230103 is a deficient number, since it is larger than the sum of its proper divisors (535076705).

1605230103 is an equidigital number, since it uses as much as digits as its factorization.

1605230103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535076704.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1605230103 is about 40065.3229489043. The cubic root of 1605230103 is about 1170.8801186941.

Adding to 1605230103 its reverse (3010325061), we get a palindrome (4615555164).

The spelling of 1605230103 in words is "one billion, six hundred five million, two hundred thirty thousand, one hundred three".