1868478 has 16 divisors (see below), whose sum is σ = 3772560. Its totient is φ = 616896.

The previous prime is 1868459. The next prime is 1868483. The reversal of 1868478 is 8748681.

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 7 ways as a sum of consecutive naturals, for example, 775 + ... + 2082.

It is an arithmetic number, because the mean of its divisors is an integer number (235785).

2^1868478 is an apocalyptic number.

1868478 is an abundant number, since it is smaller than the sum of its proper divisors (1904082).

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

1868478 is a wasteful number, since it uses less digits than its factorization.

1868478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971.

The product of its digits is 86016, while the sum is 42.

The square root of 1868478 is about 1366.9228215229. The cubic root of 1868478 is about 123.1674630866.

It can be divided in two parts, 1868 and 478, that added together give a triangular number (2346 = T₆₈).

The spelling of 1868478 in words is "one million, eight hundred sixty-eight thousand, four hundred seventy-eight".