1561347032 has 16 divisors (see below), whose sum is σ = 3345743760. Its totient is φ = 669148704.

The previous prime is 1561347001. The next prime is 1561347049. The reversal of 1561347032 is 2307431651.

It is a self number, because there is not a number n which added to its sum of digits gives 1561347032.

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 3 ways as a sum of consecutive naturals, for example, 13940543 + ... + 13940654.

It is an arithmetic number, because the mean of its divisors is an integer number (209108985).

Almost surely, 2^1561347032 is an apocalyptic number.

It is an amenable number.

1561347032 is an abundant number, since it is smaller than the sum of its proper divisors (1784396728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1561347032 is a wasteful number, since it uses less digits than its factorization.

1561347032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27881210 (or 27881206 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 1561347032 is about 39513.8840409292. The cubic root of 1561347032 is about 1160.1117193232. Note that the first 3 decimals are identical.

Adding to 1561347032 its reverse (2307431651), we get a palindrome (3868778683).

The spelling of 1561347032 in words is "one billion, five hundred sixty-one million, three hundred forty-seven thousand, thirty-two".