1601218 has 8 divisors (see below), whose sum is σ = 2407500. Its totient is φ = 798720.

The previous prime is 1601209. The next prime is 1601219. The reversal of 1601218 is 8121061.

It can be written as a sum of positive squares in 2 ways, for example, as 1545049 + 56169 = 1243^2 + 237^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1601195 and 1601204.

It is not an unprimeable number, because it can be changed into a prime (1601219) 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, 658 + ... + 1906.

2^1601218 is an apocalyptic number.

1601218 is a deficient number, since it is larger than the sum of its proper divisors (806282).

1601218 is a wasteful number, since it uses less digits than its factorization.

1601218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1601218 is about 1265.3924292487. The cubic root of 1601218 is about 116.9903807808.

Adding to 1601218 its reverse (8121061), we get a palindrome (9722279).

It can be divided in two parts, 160 and 1218, that added together give a triangular number (1378 = T₅₂).

The spelling of 1601218 in words is "one million, six hundred one thousand, two hundred eighteen".