146375809 has 4 divisors (see below), whose sum is σ = 146402116. Its totient is φ = 146349504.

The previous prime is 146375767. The next prime is 146375837. The reversal of 146375809 is 908573641.

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 23232400 + 123143409 = 4820^2 + 11097^2 .

It is a cyclic number.

It is not a de Polignac number, because 146375809 - 2⁷ = 146375681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146375839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1164 + ... + 17149.

It is an arithmetic number, because the mean of its divisors is an integer number (36600529).

Almost surely, 2^146375809 is an apocalyptic number.

It is an amenable number.

146375809 is a deficient number, since it is larger than the sum of its proper divisors (26307).

146375809 is an equidigital number, since it uses as much as digits as its factorization.

146375809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26306.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 146375809 is about 12098.5870662652. The cubic root of 146375809 is about 527.0151534253.

The spelling of 146375809 in words is "one hundred forty-six million, three hundred seventy-five thousand, eight hundred nine".