146185505 has 4 divisors (see below), whose sum is σ = 175422612. Its totient is φ = 116948400.

The previous prime is 146185441. The next prime is 146185513. The reversal of 146185505 is 505581641.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 84860944 + 61324561 = 9212^2 + 7831^2 .

It is not a de Polignac number, because 146185505 - 2⁶ = 146185441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14618546 + ... + 14618555.

It is an arithmetic number, because the mean of its divisors is an integer number (43855653).

Almost surely, 2^146185505 is an apocalyptic number.

It is an amenable number.

146185505 is a deficient number, since it is larger than the sum of its proper divisors (29237107).

146185505 is an equidigital number, since it uses as much as digits as its factorization.

146185505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29237106.

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 146185505 is about 12090.7197883335. The cubic root of 146185505 is about 526.7866626026.

The spelling of 146185505 in words is "one hundred forty-six million, one hundred eighty-five thousand, five hundred five".