1561174113 has 12 divisors (see below), whose sum is σ = 2090982800. Its totient is φ = 1036095192.

The previous prime is 1561174099. The next prime is 1561174123. The reversal of 1561174113 is 3114711651.

It is not a de Polignac number, because 1561174113 - 2²⁶ = 1494065249 is a prime.

It is a super-2 number, since 2×1561174113² = 4874529222202673538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1561174123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149538 + ... + 159636.

Almost surely, 2^1561174113 is an apocalyptic number.

It is an amenable number.

1561174113 is a deficient number, since it is larger than the sum of its proper divisors (529808687).

1561174113 is an equidigital number, since it uses as much as digits as its factorization.

1561174113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556 (or 10329 counting only the distinct ones).

The product of its digits is 2520, while the sum is 30.

The square root of 1561174113 is about 39511.6959013404. The cubic root of 1561174113 is about 1160.0688903300.

Adding to 1561174113 its reverse (3114711651), we get a palindrome (4675885764).

The spelling of 1561174113 in words is "one billion, five hundred sixty-one million, one hundred seventy-four thousand, one hundred thirteen".