161682894 has 48 divisors (see below), whose sum is σ = 370515600. Its totient is φ = 50813568.

The previous prime is 161682877. The next prime is 161682919. The reversal of 161682894 is 498286161.

161682894 is a `hidden beast` number, since 1 + 616 + 8 + 28 + 9 + 4 = 666.

161682894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161682894² = 52282716424430472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78672 + ... + 80700.

It is an arithmetic number, because the mean of its divisors is an integer number (7719075).

Almost surely, 2^161682894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161682894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185257800).

161682894 is an abundant number, since it is smaller than the sum of its proper divisors (208832706).

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

161682894 is a wasteful number, since it uses less digits than its factorization.

161682894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289 (or 2286 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 161682894 is about 12715.4588591997. The cubic root of 161682894 is about 544.7802542540.

The spelling of 161682894 in words is "one hundred sixty-one million, six hundred eighty-two thousand, eight hundred ninety-four".