161106810 has 64 divisors (see below), whose sum is σ = 401448960. Its totient is φ = 41348160.

The previous prime is 161106763. The next prime is 161106811. The reversal of 161106810 is 18601161.

It is a super-2 number, since 2×161106810² = 51910808456752200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161106811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90711 + ... + 92469.

It is an arithmetic number, because the mean of its divisors is an integer number (6272640).

Almost surely, 2^161106810 is an apocalyptic number.

161106810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161106810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200724480).

161106810 is an abundant number, since it is smaller than the sum of its proper divisors (240342150).

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

161106810 is a wasteful number, since it uses less digits than its factorization.

161106810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 161106810 is about 12692.7857462418. The cubic root of 161106810 is about 544.1324581035.

Adding to 161106810 its reverse (18601161), we get a palindrome (179707971).

The spelling of 161106810 in words is "one hundred sixty-one million, one hundred six thousand, eight hundred ten".