1868940 has 48 divisors (see below), whose sum is σ = 5816160. Its totient is φ = 498240.

The previous prime is 1868917. The next prime is 1868947. The reversal of 1868940 is 498681.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1868895 and 1868904.

It is not an unprimeable number, because it can be changed into a prime (1868947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1191 + ... + 2270.

It is an arithmetic number, because the mean of its divisors is an integer number (121170).

2^1868940 is an apocalyptic number.

1868940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1868940 is an abundant number, since it is smaller than the sum of its proper divisors (3947220).

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

1868940 is a wasteful number, since it uses less digits than its factorization.

1868940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479 (or 3471 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1868940 is about 1367.0918037937. The cubic root of 1868940 is about 123.1776137152.

1868940 divided by its sum of digits (36) gives a palindrome (51915).

The spelling of 1868940 in words is "one million, eight hundred sixty-eight thousand, nine hundred forty".