161837676 has 240 divisors, whose sum is σ = 569184000. Its totient is φ = 38724480.

The previous prime is 161837657. The next prime is 161837699. The reversal of 161837676 is 676738161.

161837676 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 324075 + ... + 324573.

It is an arithmetic number, because the mean of its divisors is an integer number (2371600).

Almost surely, 2^161837676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161837676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284592000).

161837676 is an abundant number, since it is smaller than the sum of its proper divisors (407346324).

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

161837676 is a wasteful number, since it uses less digits than its factorization.

161837676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 535 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 161837676 is about 12721.5437742438. The cubic root of 161837676 is about 544.9540415192.

The spelling of 161837676 in words is "one hundred sixty-one million, eight hundred thirty-seven thousand, six hundred seventy-six".