141795809 has 4 divisors (see below), whose sum is σ = 142123716. Its totient is φ = 141467904.

The previous prime is 141795799. The next prime is 141795839. The reversal of 141795809 is 908597141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 908597141 = 9161 ⋅99181.

It can be written as a sum of positive squares in 2 ways, for example, as 90630400 + 51165409 = 9520^2 + 7153^2 .

It is a cyclic number.

It is not a de Polignac number, because 141795809 - 2¹⁶ = 141730273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 141795809.

It is not an unprimeable number, because it can be changed into a prime (141795839) by changing a digit.

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, 163304 + ... + 164169.

It is an arithmetic number, because the mean of its divisors is an integer number (35530929).

Almost surely, 2^141795809 is an apocalyptic number.

It is an amenable number.

141795809 is a deficient number, since it is larger than the sum of its proper divisors (327907).

141795809 is an equidigital number, since it uses as much as digits as its factorization.

141795809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327906.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 141795809 is about 11907.8045415601. The cubic root of 141795809 is about 521.4601576341.

The spelling of 141795809 in words is "one hundred forty-one million, seven hundred ninety-five thousand, eight hundred nine".