161475366 has 64 divisors (see below), whose sum is σ = 356428800. Its totient is φ = 48470400.

The previous prime is 161475361. The next prime is 161475397. The reversal of 161475366 is 663574161.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161475361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 811335 + ... + 811533.

It is an arithmetic number, because the mean of its divisors is an integer number (5569200).

Almost surely, 2^161475366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161475366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178214400).

161475366 is an abundant number, since it is smaller than the sum of its proper divisors (194953434).

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

161475366 is a wasteful number, since it uses less digits than its factorization.

161475366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421.

The product of its digits is 90720, while the sum is 39.

The square root of 161475366 is about 12707.2957784101. The cubic root of 161475366 is about 544.5470703143.

The spelling of 161475366 in words is "one hundred sixty-one million, four hundred seventy-five thousand, three hundred sixty-six".