161110805 has 16 divisors (see below), whose sum is σ = 200534400. Its totient is φ = 124111680.

The previous prime is 161110793. The next prime is 161110811. The reversal of 161110805 is 508011161.

It is a happy number.

161110805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161110805 - 2¹² = 161106709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62390 + ... + 64920.

It is an arithmetic number, because the mean of its divisors is an integer number (12533400).

Almost surely, 2^161110805 is an apocalyptic number.

It is an amenable number.

161110805 is a deficient number, since it is larger than the sum of its proper divisors (39423595).

161110805 is a wasteful number, since it uses less digits than its factorization.

161110805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 161110805 is about 12692.9431181267. The cubic root of 161110805 is about 544.1369557227.

Adding to 161110805 its reverse (508011161), we get a palindrome (669121966).

The spelling of 161110805 in words is "one hundred sixty-one million, one hundred ten thousand, eight hundred five".