4851891 has 12 divisors (see below), whose sum is σ = 7645560. Its totient is φ = 2940480.

The previous prime is 4851883. The next prime is 4851893. The reversal of 4851891 is 1981584.

It is not a de Polignac number, because 4851891 - 2³ = 4851883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4851893) 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, 24406 + ... + 24603.

It is an arithmetic number, because the mean of its divisors is an integer number (637130).

Almost surely, 2^4851891 is an apocalyptic number.

4851891 is a deficient number, since it is larger than the sum of its proper divisors (2793669).

4851891 is a wasteful number, since it uses less digits than its factorization.

4851891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49026 (or 49023 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 4851891 is about 2202.7008421481. The cubic root of 4851891 is about 169.2922245915.

It can be divided in two parts, 4851 and 891, that multiplied together give a square (4322241 = 2079²).

The spelling of 4851891 in words is "four million, eight hundred fifty-one thousand, eight hundred ninety-one".