161952782 has 4 divisors (see below), whose sum is σ = 242929176. Its totient is φ = 80976390.

The previous prime is 161952701. The next prime is 161952787. The reversal of 161952782 is 287259161.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161952787) 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 as a sum of consecutive naturals, namely, 40488194 + ... + 40488197.

It is an arithmetic number, because the mean of its divisors is an integer number (60732294).

Almost surely, 2^161952782 is an apocalyptic number.

161952782 is a deficient number, since it is larger than the sum of its proper divisors (80976394).

161952782 is an equidigital number, since it uses as much as digits as its factorization.

161952782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80976393.

The product of its digits is 60480, while the sum is 41.

The square root of 161952782 is about 12726.0670279549. The cubic root of 161952782 is about 545.0832092462.

The spelling of 161952782 in words is "one hundred sixty-one million, nine hundred fifty-two thousand, seven hundred eighty-two".