161110782 has 80 divisors (see below), whose sum is σ = 425981952. Its totient is φ = 44537040.

The previous prime is 161110759. The next prime is 161110787. The reversal of 161110782 is 287011161.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161110787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 32863 + ... + 37445.

Almost surely, 2^161110782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161110782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212990976).

161110782 is an abundant number, since it is smaller than the sum of its proper divisors (264871170).

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

161110782 is a wasteful number, since it uses less digits than its factorization.

161110782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4635 (or 4626 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

The square root of 161110782 is about 12692.9422121114. The cubic root of 161110782 is about 544.1369298292.

The spelling of 161110782 in words is "one hundred sixty-one million, one hundred ten thousand, seven hundred eighty-two".