1561340134 has 16 divisors (see below), whose sum is σ = 2406355776. Its totient is φ = 759240000.

The previous prime is 1561340107. The next prime is 1561340173. The reversal of 1561340134 is 4310431651.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 326259 + ... + 331009.

It is an arithmetic number, because the mean of its divisors is an integer number (150397236).

Almost surely, 2^1561340134 is an apocalyptic number.

1561340134 is a deficient number, since it is larger than the sum of its proper divisors (845015642).

1561340134 is a wasteful number, since it uses less digits than its factorization.

1561340134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9231.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1561340134 is about 39513.7967550576. The cubic root of 1561340134 is about 1160.1100108706.

Adding to 1561340134 its reverse (4310431651), we get a palindrome (5871771785).

The spelling of 1561340134 in words is "one billion, five hundred sixty-one million, three hundred forty thousand, one hundred thirty-four".