145634185 has 8 divisors (see below), whose sum is σ = 175359240. Its totient is φ = 116108544.

The previous prime is 145634149. The next prime is 145634191. The reversal of 145634185 is 581436541.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 57198969 + 88435216 = 7563^2 + 9404^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 145634185 - 2⁹ = 145633673 is a prime.

It is a super-2 number, since 2×145634185² = 42418631681228450, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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 7 ways as a sum of consecutive naturals, for example, 48240 + ... + 51169.

It is an arithmetic number, because the mean of its divisors is an integer number (21919905).

Almost surely, 2^145634185 is an apocalyptic number.

It is an amenable number.

145634185 is a deficient number, since it is larger than the sum of its proper divisors (29725055).

145634185 is an equidigital number, since it uses as much as digits as its factorization.

145634185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99707.

The product of its digits is 57600, while the sum is 37.

The square root of 145634185 is about 12067.8989472070. The cubic root of 145634185 is about 526.1235920886.

The spelling of 145634185 in words is "one hundred forty-five million, six hundred thirty-four thousand, one hundred eighty-five".