1856045 has 8 divisors (see below), whose sum is σ = 2238360. Its totient is φ = 1477440.

The previous prime is 1856039. The next prime is 1856059. The reversal of 1856045 is 5406581.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 813604 + 1042441 = 902^2 + 1021^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1856045 - 2⁶ = 1855981 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1855999 and 1856017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335 + ... + 1955.

It is an arithmetic number, because the mean of its divisors is an integer number (279795).

2^1856045 is an apocalyptic number.

It is an amenable number.

1856045 is a deficient number, since it is larger than the sum of its proper divisors (382315).

1856045 is a wasteful number, since it uses less digits than its factorization.

1856045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1856045 is about 1362.3674247427. The cubic root of 1856045 is about 122.8936662253.

The spelling of 1856045 in words is "one million, eight hundred fifty-six thousand, forty-five".