161238982 has 16 divisors (see below), whose sum is σ = 260286912. Its totient is φ = 74632320.

The previous prime is 161238971. The next prime is 161238989. The reversal of 161238982 is 289832161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161238989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36798 + ... + 40945.

It is an arithmetic number, because the mean of its divisors is an integer number (16267932).

Almost surely, 2^161238982 is an apocalyptic number.

161238982 is a deficient number, since it is larger than the sum of its proper divisors (99047930).

161238982 is a wasteful number, since it uses less digits than its factorization.

161238982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77823.

The product of its digits is 41472, while the sum is 40.

The square root of 161238982 is about 12697.9912584629. The cubic root of 161238982 is about 544.2812194889.

The spelling of 161238982 in words is "one hundred sixty-one million, two hundred thirty-eight thousand, nine hundred eighty-two".