161536782 has 16 divisors (see below), whose sum is σ = 352444032. Its totient is φ = 48950520.

The previous prime is 161536769. The next prime is 161536789. The reversal of 161536782 is 287635161.

It is a self number, because there is not a number n which added to its sum of digits gives 161536782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161536789) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1223698 + ... + 1223829.

It is an arithmetic number, because the mean of its divisors is an integer number (22027752).

Almost surely, 2^161536782 is an apocalyptic number.

161536782 is an abundant number, since it is smaller than the sum of its proper divisors (190907250).

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

161536782 is a wasteful number, since it uses less digits than its factorization.

161536782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447543.

The product of its digits is 60480, while the sum is 39.

The square root of 161536782 is about 12709.7121131834. The cubic root of 161536782 is about 544.6160997573.

The spelling of 161536782 in words is "one hundred sixty-one million, five hundred thirty-six thousand, seven hundred eighty-two".