1516161603 has 16 divisors (see below), whose sum is σ = 2206118016. Its totient is φ = 918555840.

The previous prime is 1516161589. The next prime is 1516161611. The reversal of 1516161603 is 3061616151.

It is not a de Polignac number, because 1516161603 - 2⁶ = 1516161539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1516161623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110575 + ... + 123527.

It is an arithmetic number, because the mean of its divisors is an integer number (137882376).

Almost surely, 2^1516161603 is an apocalyptic number.

1516161603 is a deficient number, since it is larger than the sum of its proper divisors (689956413).

1516161603 is a wasteful number, since it uses less digits than its factorization.

1516161603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16514.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1516161603 is about 38937.9198596946. The cubic root of 1516161603 is about 1148.8107688590.

Adding to 1516161603 its reverse (3061616151), we get a palindrome (4577777754).

The spelling of 1516161603 in words is "one billion, five hundred sixteen million, one hundred sixty-one thousand, six hundred three".