161748 has 18 divisors (see below), whose sum is σ = 408954. Its totient is φ = 53904.

The previous prime is 161743. The next prime is 161753. The reversal of 161748 is 847161.

It is a happy number.

161748 is a `hidden beast` number, since 1 + 617 + 48 = 666.

It is an interprime number because it is at equal distance from previous prime (161743) and next prime (161753).

It can be written as a sum of positive squares in only one way, i.e., 161604 + 144 = 402^2 + 12^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161741) by changing a digit.

161748 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 in 5 ways as a sum of consecutive naturals, for example, 2211 + ... + 2282.

2¹⁶¹⁷⁴⁸ is an apocalyptic number.

161748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

161748 is an abundant number, since it is smaller than the sum of its proper divisors (247206).

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

161748 is a wasteful number, since it uses less digits than its factorization.

161748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4503 (or 4498 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 161748 is about 402.1790645969. The cubic root of 161748 is about 54.4853367953.

It can be divided in two parts, 161 and 748, that added together give a palindrome (909).

The spelling of 161748 in words is "one hundred sixty-one thousand, seven hundred forty-eight".