161374 has 4 divisors (see below), whose sum is σ = 242064. Its totient is φ = 80686.

The previous prime is 161363. The next prime is 161377. The reversal of 161374 is 473161.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161377) by changing a digit.

161374 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40342 + ... + 40345.

It is an arithmetic number, because the mean of its divisors is an integer number (60516).

2¹⁶¹³⁷⁴ is an apocalyptic number.

161374 is a deficient number, since it is larger than the sum of its proper divisors (80690).

161374 is an equidigital number, since it uses as much as digits as its factorization.

161374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80689.

The product of its digits is 504, while the sum is 22.

The square root of 161374 is about 401.7138284899. The cubic root of 161374 is about 54.4433100169.

It can be divided in two parts, 161 and 374, that added together give a palindrome (535).

The spelling of 161374 in words is "one hundred sixty-one thousand, three hundred seventy-four".