1018215 has 48 divisors (see below), whose sum is σ = 2055456. Its totient is φ = 464640.

The previous prime is 1018207. The next prime is 1018217. The reversal of 1018215 is 5128101.

It is not a de Polignac number, because 1018215 - 2³ = 1018207 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59887 + ... + 59903.

It is an arithmetic number, because the mean of its divisors is an integer number (42822).

2^1018215 is an apocalyptic number.

1018215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1018215 is an abundant number, since it is smaller than the sum of its proper divisors (1037241).

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

1018215 is a wasteful number, since it uses less digits than its factorization.

1018215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1018215 is about 1009.0664001938. The cubic root of 1018215 is about 100.6035170115.

It can be divided in two parts, 10 and 18215, that added together give a square (18225 = 135²).

The spelling of 1018215 in words is "one million, eighteen thousand, two hundred fifteen".