1868080 has 40 divisors (see below), whose sum is σ = 4575600. Its totient is φ = 707328.

The previous prime is 1868063. The next prime is 1868107. The reversal of 1868080 is 808681.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 906 + ... + 2134.

It is an arithmetic number, because the mean of its divisors is an integer number (114390).

2^1868080 is an apocalyptic number.

1868080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1868080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2287800).

1868080 is an abundant number, since it is smaller than the sum of its proper divisors (2707520).

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

1868080 is a wasteful number, since it uses less digits than its factorization.

1868080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 1868080 is about 1366.7772313000. Note that the first 3 decimals coincide. The cubic root of 1868080 is about 123.1587172640.

The spelling of 1868080 in words is "one million, eight hundred sixty-eight thousand, eighty".