161243082 has 256 divisors, whose sum is σ = 509644800. Its totient is φ = 36391680.

The previous prime is 161243039. The next prime is 161243083. The reversal of 161243082 is 280342161.

161243082 is a `hidden beast` number, since 1 + 612 + 43 + 0 + 8 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (161243083) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1026948 + ... + 1027104.

It is an arithmetic number, because the mean of its divisors is an integer number (1990800).

Almost surely, 2^161243082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161243082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254822400).

161243082 is an abundant number, since it is smaller than the sum of its proper divisors (348401718).

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

161243082 is a wasteful number, since it uses less digits than its factorization.

161243082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 161243082 is about 12698.1527002946. The cubic root of 161243082 is about 544.2858327945.

The spelling of 161243082 in words is "one hundred sixty-one million, two hundred forty-three thousand, eighty-two".