161741632 has 56 divisors (see below), whose sum is σ = 356851712. Its totient is φ = 72230400.

The previous prime is 161741627. The next prime is 161741641. The reversal of 161741632 is 236147161.

161741632 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 161741594 and 161741603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22657 + ... + 28927.

It is an arithmetic number, because the mean of its divisors is an integer number (6372352).

Almost surely, 2^161741632 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 161741632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178425856).

161741632 is an abundant number, since it is smaller than the sum of its proper divisors (195110080).

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

161741632 is a wasteful number, since it uses less digits than its factorization.

161741632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6327 (or 6317 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 161741632 is about 12717.7683576955. The cubic root of 161741632 is about 544.8462175883.

Adding to 161741632 its reverse (236147161), we get a palindrome (397888793).

The spelling of 161741632 in words is "one hundred sixty-one million, seven hundred forty-one thousand, six hundred thirty-two".