1868994 has 40 divisors (see below), whose sum is σ = 4268880. Its totient is φ = 611064.

The previous prime is 1868989. The next prime is 1869029. The reversal of 1868994 is 4998681.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13377 + ... + 13515.

It is an arithmetic number, because the mean of its divisors is an integer number (106722).

2^1868994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1868994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2134440).

1868994 is an abundant number, since it is smaller than the sum of its proper divisors (2399886).

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

1868994 is a wasteful number, since it uses less digits than its factorization.

1868994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 227 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 1868994 is about 1367.1115536049. Note that the first 3 decimals coincide. The cubic root of 1868994 is about 123.1788000431.

It can be divided in two parts, 186 and 8994, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 1868994 in words is "one million, eight hundred sixty-eight thousand, nine hundred ninety-four".