350642161 has 4 divisors (see below), whose sum is σ = 362733300. Its totient is φ = 338551024.

The previous prime is 350642129. The next prime is 350642189. The reversal of 350642161 is 161246053.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161246053 = 2293 ⋅70321.

It can be written as a sum of positive squares in 2 ways, for example, as 58232161 + 292410000 = 7631^2 + 17100^2 .

It is a cyclic number.

It is not a de Polignac number, because 350642161 - 2⁵ = 350642129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (350642191) 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, 6045526 + ... + 6045583.

It is an arithmetic number, because the mean of its divisors is an integer number (90683325).

Almost surely, 2^350642161 is an apocalyptic number.

It is an amenable number.

350642161 is a deficient number, since it is larger than the sum of its proper divisors (12091139).

350642161 is a wasteful number, since it uses less digits than its factorization.

350642161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12091138.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 350642161 is about 18725.4415435257. The cubic root of 350642161 is about 705.1606099212.

The spelling of 350642161 in words is "three hundred fifty million, six hundred forty-two thousand, one hundred sixty-one".