918284161 has 4 divisors (see below), whose sum is σ = 919113300. Its totient is φ = 917455024.

The previous prime is 918284153. The next prime is 918284183. The reversal of 918284161 is 161482819.

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 157351936 + 760932225 = 12544^2 + 27585^2 .

It is a cyclic number.

It is not a de Polignac number, because 918284161 - 2³ = 918284153 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (918284761) 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, 412906 + ... + 415123.

It is an arithmetic number, because the mean of its divisors is an integer number (229778325).

Almost surely, 2^918284161 is an apocalyptic number.

It is an amenable number.

918284161 is a deficient number, since it is larger than the sum of its proper divisors (829139).

918284161 is a wasteful number, since it uses less digits than its factorization.

918284161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829138.

The product of its digits is 27648, while the sum is 40.

The square root of 918284161 is about 30303.2038075184. The cubic root of 918284161 is about 971.9838101392.

The spelling of 918284161 in words is "nine hundred eighteen million, two hundred eighty-four thousand, one hundred sixty-one".