1561413005 has 8 divisors (see below), whose sum is σ = 1875757824. Its totient is φ = 1247755600.

The previous prime is 1561412969. The next prime is 1561413031. The reversal of 1561413005 is 5003141651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1561413005 - 2¹⁴ = 1561396621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166841 + ... + 175950.

It is an arithmetic number, because the mean of its divisors is an integer number (234469728).

Almost surely, 2^1561413005 is an apocalyptic number.

It is an amenable number.

1561413005 is a deficient number, since it is larger than the sum of its proper divisors (314344819).

1561413005 is an equidigital number, since it uses as much as digits as its factorization.

1561413005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343707.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1561413005 is about 39514.7188399462. The cubic root of 1561413005 is about 1160.1280588410.

Adding to 1561413005 its reverse (5003141651), we get a palindrome (6564554656).

The spelling of 1561413005 in words is "one billion, five hundred sixty-one million, four hundred thirteen thousand, five".