1613523103 has 4 divisors (see below), whose sum is σ = 1613611528. Its totient is φ = 1613434680.

The previous prime is 1613523101. The next prime is 1613523133. The reversal of 1613523103 is 3013253161.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1613523103 - 2¹ = 1613523101 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 (1613523101) 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, 5601 + ... + 57082.

It is an arithmetic number, because the mean of its divisors is an integer number (403402882).

Almost surely, 2^1613523103 is an apocalyptic number.

1613523103 is a deficient number, since it is larger than the sum of its proper divisors (88425).

1613523103 is an equidigital number, since it uses as much as digits as its factorization.

1613523103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88424.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1613523103 is about 40168.6831125941. The cubic root of 1613523103 is about 1172.8930045847.

Adding to 1613523103 its reverse (3013253161), we get a palindrome (4626776264).

The spelling of 1613523103 in words is "one billion, six hundred thirteen million, five hundred twenty-three thousand, one hundred three".