161374044 has 48 divisors (see below), whose sum is σ = 407970080. Its totient is φ = 49645440.

The previous prime is 161374043. The next prime is 161374061. The reversal of 161374044 is 440473161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161374043) 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 15 ways as a sum of consecutive naturals, for example, 23304 + ... + 29424.

Almost surely, 2^161374044 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 161374044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203985040).

161374044 is an abundant number, since it is smaller than the sum of its proper divisors (246596036).

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

161374044 is a wasteful number, since it uses less digits than its factorization.

161374044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6167 (or 6139 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 161374044 is about 12703.3083879752. The cubic root of 161374044 is about 544.4331496508.

It can be divided in two parts, 1613 and 74044, that added together give a palindrome (75657).

The spelling of 161374044 in words is "one hundred sixty-one million, three hundred seventy-four thousand, forty-four".