161942382 has 64 divisors (see below), whose sum is σ = 413130240. Its totient is φ = 46061568.

The previous prime is 161942381. The next prime is 161942383. The reversal of 161942382 is 283249161.

161942382 is a `hidden beast` number, since 1 + 619 + 4 + 2 + 38 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (161942381) and next prime (161942383).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161942381) 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, 96313 + ... + 97979.

It is an arithmetic number, because the mean of its divisors is an integer number (6455160).

Almost surely, 2^161942382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161942382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206565120).

161942382 is an abundant number, since it is smaller than the sum of its proper divisors (251187858).

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

161942382 is a wasteful number, since it uses less digits than its factorization.

161942382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942 (or 1936 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 161942382 is about 12725.6584112572. The cubic root of 161942382 is about 545.0715412636.

The spelling of 161942382 in words is "one hundred sixty-one million, nine hundred forty-two thousand, three hundred eighty-two".