161874594 has 48 divisors (see below), whose sum is σ = 404756352. Its totient is φ = 45797184.

The previous prime is 161874577. The next prime is 161874673. The reversal of 161874594 is 495478161.

161874594 is a `hidden beast` number, since 16 + 187 + 459 + 4 = 666.

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, 6742 + ... + 19214.

It is an arithmetic number, because the mean of its divisors is an integer number (8432424).

Almost surely, 2^161874594 is an apocalyptic number.

161874594 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161874594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202378176).

161874594 is an abundant number, since it is smaller than the sum of its proper divisors (242881758).

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

161874594 is a wasteful number, since it uses less digits than its factorization.

161874594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12591 (or 12588 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 161874594 is about 12722.9946946464. The cubic root of 161874594 is about 544.9954762130.

The spelling of 161874594 in words is "one hundred sixty-one million, eight hundred seventy-four thousand, five hundred ninety-four".