2143618 has 12 divisors (see below), whose sum is σ = 3394710. Its totient is φ = 1015056.

The previous prime is 2143579. The next prime is 2143621. The reversal of 2143618 is 8163412.

It can be written as a sum of positive squares in only one way, i.e., 2140369 + 3249 = 1463^2 + 57^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2143592 and 2143601.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 763 + ... + 2206.

2^2143618 is an apocalyptic number.

2143618 is a deficient number, since it is larger than the sum of its proper divisors (1251092).

2143618 is a wasteful number, since it uses less digits than its factorization.

2143618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3009 (or 2990 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 2143618 is about 1464.1099685474. The cubic root of 2143618 is about 128.9384559102.

It can be divided in two parts, 214361 and 8, that added together give a square (214369 = 463²).

The spelling of 2143618 in words is "two million, one hundred forty-three thousand, six hundred eighteen".