161108732 has 6 divisors (see below), whose sum is σ = 281940288. Its totient is φ = 80554364.

The previous prime is 161108719. The next prime is 161108749. The reversal of 161108732 is 237801161.

It is a junction number, because it is equal to n+sod(n) for n = 161108695 and 161108704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20138588 + ... + 20138595.

It is an arithmetic number, because the mean of its divisors is an integer number (46990048).

Almost surely, 2^161108732 is an apocalyptic number.

It is an amenable number.

161108732 is a deficient number, since it is larger than the sum of its proper divisors (120831556).

161108732 is a wasteful number, since it uses less digits than its factorization.

161108732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40277187 (or 40277185 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 161108732 is about 12692.8614583159. The cubic root of 161108732 is about 544.1346219236.

Adding to 161108732 its reverse (237801161), we get a palindrome (398909893).

It can be divided in two parts, 16110 and 8732, that added together give a palindrome (24842).

The spelling of 161108732 in words is "one hundred sixty-one million, one hundred eight thousand, seven hundred thirty-two".