1868140 has 12 divisors (see below), whose sum is σ = 3923136. Its totient is φ = 747248.

The previous prime is 1868107. The next prime is 1868149. The reversal of 1868140 is 418681.

It is a junction number, because it is equal to n+sod(n) for n = 1868099 and 1868108.

It is not an unprimeable number, because it can be changed into a prime (1868149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46684 + ... + 46723.

It is an arithmetic number, because the mean of its divisors is an integer number (326928).

2^1868140 is an apocalyptic number.

1868140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1868140 is an abundant number, since it is smaller than the sum of its proper divisors (2054996).

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

1868140 is a wasteful number, since it uses less digits than its factorization.

1868140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93416 (or 93414 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1868140 is about 1366.7991805675. The cubic root of 1868140 is about 123.1600358092.

It can be divided in two parts, 18681 and 40, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 1868140 in words is "one million, eight hundred sixty-eight thousand, one hundred forty".