2039851 has 4 divisors (see below), whose sum is σ = 2225304. Its totient is φ = 1854400.

The previous prime is 2039837. The next prime is 2039857. The reversal of 2039851 is 1589302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2039851 - 2⁵ = 2039819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2039857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92710 + ... + 92731.

It is an arithmetic number, because the mean of its divisors is an integer number (556326).

2^2039851 is an apocalyptic number.

2039851 is a deficient number, since it is larger than the sum of its proper divisors (185453).

2039851 is a wasteful number, since it uses less digits than its factorization.

2039851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185452.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2039851 is about 1428.2335243230. The cubic root of 2039851 is about 126.8234262628.

It can be divided in two parts, 20398 and 51, that added together give a square (20449 = 143²).

The spelling of 2039851 in words is "two million, thirty-nine thousand, eight hundred fifty-one".