1618868 has 24 divisors (see below), whose sum is σ = 2956800. Its totient is φ = 775008.

The previous prime is 1618853. The next prime is 1618891. The reversal of 1618868 is 8688161.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14798 + ... + 14906.

It is an arithmetic number, because the mean of its divisors is an integer number (123200).

2^1618868 is an apocalyptic number.

It is an amenable number.

1618868 is a deficient number, since it is larger than the sum of its proper divisors (1337932).

1618868 is a wasteful number, since it uses less digits than its factorization.

1618868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 237 counting only the distinct ones).

The product of its digits is 18432, while the sum is 38.

The square root of 1618868 is about 1272.3474368269. The cubic root of 1618868 is about 117.4186671191.

The spelling of 1618868 in words is "one million, six hundred eighteen thousand, eight hundred sixty-eight".