363908161 has 4 divisors (see below), whose sum is σ = 363946324. Its totient is φ = 363870000.

The previous prime is 363908147. The next prime is 363908173. The reversal of 363908161 is 161809363.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 103408561 + 260499600 = 10169^2 + 16140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-363908161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 363908161.

It is not an unprimeable number, because it can be changed into a prime (363908191) 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, 8911 + ... + 28411.

It is an arithmetic number, because the mean of its divisors is an integer number (90986581).

Almost surely, 2^363908161 is an apocalyptic number.

It is an amenable number.

363908161 is a deficient number, since it is larger than the sum of its proper divisors (38163).

363908161 is a wasteful number, since it uses less digits than its factorization.

363908161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38162.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 363908161 is about 19076.3770407276. The cubic root of 363908161 is about 713.9436442533.

It can be divided in two parts, 36390 and 8161, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 363908161 in words is "three hundred sixty-three million, nine hundred eight thousand, one hundred sixty-one".