1901856 has 48 divisors (see below), whose sum is σ = 5449248. Its totient is φ = 576000.

The previous prime is 1901839. The next prime is 1901857. The reversal of 1901856 is 6581091.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1901857) 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 7 ways as a sum of consecutive naturals, for example, 156 + ... + 1956.

It is an arithmetic number, because the mean of its divisors is an integer number (113526).

2^1901856 is an apocalyptic number.

1901856 is a gapful number since it is divisible by the number (16) 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 1901856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2724624).

1901856 is an abundant number, since it is smaller than the sum of its proper divisors (3547392).

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

1901856 is a wasteful number, since it uses less digits than its factorization.

1901856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825 (or 1817 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 1901856 is about 1379.0779528366. The cubic root of 1901856 is about 123.8965491661.

The spelling of 1901856 in words is "one million, nine hundred one thousand, eight hundred fifty-six".