1994851 has 4 divisors (see below), whose sum is σ = 2014704. Its totient is φ = 1975000.

The previous prime is 1994843. The next prime is 1994869. The reversal of 1994851 is 1584991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1584991 = 107 ⋅14813.

It is a cyclic number.

It is not a de Polignac number, because 1994851 - 2³ = 1994843 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1994851.

It is not an unprimeable number, because it can be changed into a prime (1994051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9775 + ... + 9976.

It is an arithmetic number, because the mean of its divisors is an integer number (503676).

2^1994851 is an apocalyptic number.

1994851 is a deficient number, since it is larger than the sum of its proper divisors (19853).

1994851 is a wasteful number, since it uses less digits than its factorization.

1994851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19852.

The product of its digits is 12960, while the sum is 37.

The square root of 1994851 is about 1412.3919427694. The cubic root of 1994851 is about 125.8838898449.

Subtracting from 1994851 its product of digits (12960), we obtain a palindrome (1981891).

It can be divided in two parts, 199 and 4851, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 1994851 in words is "one million, nine hundred ninety-four thousand, eight hundred fifty-one".