146181 has 8 divisors (see below), whose sum is σ = 222784. Its totient is φ = 83520.

The previous prime is 146173. The next prime is 146191. The reversal of 146181 is 181641.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 146181 - 2³ = 146173 is a prime.

It is a super-2 number, since 2×146181² = 42737769522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 6961 = 146181 / (1 + 4 + 6 + 1 + 8 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 146181.

It is not an unprimeable number, because it can be changed into a prime (146141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3460 + ... + 3501.

It is an arithmetic number, because the mean of its divisors is an integer number (27848).

2¹⁴⁶¹⁸¹ is an apocalyptic number.

It is an amenable number.

146181 is a deficient number, since it is larger than the sum of its proper divisors (76603).

146181 is an equidigital number, since it uses as much as digits as its factorization.

146181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6971.

The product of its digits is 192, while the sum is 21.

The square root of 146181 is about 382.3362394542. The cubic root of 146181 is about 52.6781251217.

It can be divided in two parts, 1461 and 81, that multiplied together give a triangular number (118341 = T₄₈₆).

The spelling of 146181 in words is "one hundred forty-six thousand, one hundred eighty-one".