1618872 has 16 divisors (see below), whose sum is σ = 4047240. Its totient is φ = 539616.

The previous prime is 1618853. The next prime is 1618891. The reversal of 1618872 is 2788161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1618853) and next prime (1618891).

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 3 ways as a sum of consecutive naturals, for example, 33703 + ... + 33750.

2^1618872 is an apocalyptic number.

1618872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1618872 is an abundant number, since it is smaller than the sum of its proper divisors (2428368).

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

1618872 is a wasteful number, since it uses less digits than its factorization.

1618872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67462 (or 67458 counting only the distinct ones).

The product of its digits is 5376, while the sum is 33.

The square root of 1618872 is about 1272.3490087236. The cubic root of 1618872 is about 117.4187638274.

The spelling of 1618872 in words is "one million, six hundred eighteen thousand, eight hundred seventy-two".