1854864 has 60 divisors (see below), whose sum is σ = 5667792. Its totient is φ = 561600.

The previous prime is 1854863. The next prime is 1854883. The reversal of 1854864 is 4684581.

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

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1854863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 999 + ... + 2169.

2^1854864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1854864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2833896).

1854864 is an abundant number, since it is smaller than the sum of its proper divisors (3812928).

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

1854864 is a wasteful number, since it uses less digits than its factorization.

1854864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196 (or 1187 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 1854864 is about 1361.9339191018. The cubic root of 1854864 is about 122.8675949798.

The spelling of 1854864 in words is "one million, eight hundred fifty-four thousand, eight hundred sixty-four".