365789161 has 4 divisors (see below), whose sum is σ = 366235524. Its totient is φ = 365342800.

The previous prime is 365789143. The next prime is 365789183. The reversal of 365789161 is 161987563.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161987563 = 461 ⋅351383.

It can be written as a sum of positive squares in 2 ways, for example, as 131239936 + 234549225 = 11456^2 + 15315^2 .

It is a cyclic number.

It is not a de Polignac number, because 365789161 - 2¹³ = 365780969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (365789131) 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, 221950 + ... + 223591.

It is an arithmetic number, because the mean of its divisors is an integer number (91558881).

Almost surely, 2^365789161 is an apocalyptic number.

It is an amenable number.

365789161 is a deficient number, since it is larger than the sum of its proper divisors (446363).

365789161 is an equidigital number, since it uses as much as digits as its factorization.

365789161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446362.

The product of its digits is 272160, while the sum is 46.

The square root of 365789161 is about 19125.6153103632. The cubic root of 365789161 is about 715.1716288072.

The spelling of 365789161 in words is "three hundred sixty-five million, seven hundred eighty-nine thousand, one hundred sixty-one".