146811985 has 4 divisors (see below), whose sum is σ = 176174388. Its totient is φ = 117449584.

The previous prime is 146811953. The next prime is 146812009. The reversal of 146811985 is 589118641.

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 95101504 + 51710481 = 9752^2 + 7191^2 .

It is a cyclic number.

It is not a de Polignac number, because 146811985 - 2⁵ = 146811953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14681194 + ... + 14681203.

It is an arithmetic number, because the mean of its divisors is an integer number (44043597).

Almost surely, 2^146811985 is an apocalyptic number.

It is an amenable number.

146811985 is a deficient number, since it is larger than the sum of its proper divisors (29362403).

146811985 is an equidigital number, since it uses as much as digits as its factorization.

146811985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29362402.

The product of its digits is 69120, while the sum is 43.

The square root of 146811985 is about 12116.5995642342. The cubic root of 146811985 is about 527.5381073523.

The spelling of 146811985 in words is "one hundred forty-six million, eight hundred eleven thousand, nine hundred eighty-five".