161087346 has 128 divisors (see below), whose sum is σ = 431308800. Its totient is φ = 43597440.

The previous prime is 161087293. The next prime is 161087347. The reversal of 161087346 is 643780161.

161087346 is a `hidden beast` number, since 1 + 610 + 8 + 7 + 34 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 161087346.

It is not an unprimeable number, because it can be changed into a prime (161087347) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 691246 + ... + 691478.

It is an arithmetic number, because the mean of its divisors is an integer number (3369600).

Almost surely, 2^161087346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161087346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215654400).

161087346 is an abundant number, since it is smaller than the sum of its proper divisors (270221454).

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

161087346 is a wasteful number, since it uses less digits than its factorization.

161087346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 161087346 is about 12692.0189883249. The cubic root of 161087346 is about 544.1105442343.

The spelling of 161087346 in words is "one hundred sixty-one million, eighty-seven thousand, three hundred forty-six".