1561132413 has 16 divisors (see below), whose sum is σ = 2318299200. Its totient is φ = 1038275280.

The previous prime is 1561132381. The next prime is 1561132439. The reversal of 1561132413 is 3142311651.

It is a happy number.

1561132413 is a `hidden beast` number, since 1 + 5 + 611 + 3 + 2 + 41 + 3 = 666.

It is not a de Polignac number, because 1561132413 - 2⁵ = 1561132381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561132493) 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, 57303 + ... + 80036.

It is an arithmetic number, because the mean of its divisors is an integer number (144893700).

Almost surely, 2^1561132413 is an apocalyptic number.

It is an amenable number.

1561132413 is a deficient number, since it is larger than the sum of its proper divisors (757166787).

1561132413 is a wasteful number, since it uses less digits than its factorization.

1561132413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137769 (or 137763 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1561132413 is about 39511.1682059642. The cubic root of 1561132413 is about 1160.0585615005.

The spelling of 1561132413 in words is "one billion, five hundred sixty-one million, one hundred thirty-two thousand, four hundred thirteen".