361218 has 32 divisors (see below), whose sum is σ = 850752. Its totient is φ = 100800.

The previous prime is 361217. The next prime is 361219. The reversal of 361218 is 812163.

It is an interprime number because it is at equal distance from previous prime (361217) and next prime (361219).

It is an alternating number because its digits alternate between odd and even.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 361194 and 361203.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 361218.

It is not an unprimeable number, because it can be changed into a prime (361211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 648 + ... + 1068.

It is an arithmetic number, because the mean of its divisors is an integer number (26586).

2³⁶¹²¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 361218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425376).

361218 is an abundant number, since it is smaller than the sum of its proper divisors (489534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

361218 is a wasteful number, since it uses less digits than its factorization.

361218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450.

The product of its digits is 288, while the sum is 21.

The square root of 361218 is about 601.0141429284. The cubic root of 361218 is about 71.2180034850.

The spelling of 361218 in words is "three hundred sixty-one thousand, two hundred eighteen".