1860864 has 36 divisors (see below), whose sum is σ = 4954656. Its totient is φ = 620032.

The previous prime is 1860857. The next prime is 1860869. The reversal of 1860864 is 4680681.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1860869) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 444 + ... + 1979.

2^1860864 is an apocalyptic number.

It is an amenable number.

1860864 is an abundant number, since it is smaller than the sum of its proper divisors (3093792).

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

1860864 is an equidigital number, since it uses as much as digits as its factorization.

1860864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442 (or 2428 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1860864 is about 1364.1348906908. The cubic root of 1860864 is about 122.9999339017. Note that the first 4 decimals are identical.

The spelling of 1860864 in words is "one million, eight hundred sixty thousand, eight hundred sixty-four".