4861851 has 4 divisors (see below), whose sum is σ = 6482472. Its totient is φ = 3241232.

The previous prime is 4861811. The next prime is 4861859. The reversal of 4861851 is 1581684.

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 4861851 - 2¹³ = 4853659 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4861859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810306 + ... + 810311.

It is an arithmetic number, because the mean of its divisors is an integer number (1620618).

Almost surely, 2^4861851 is an apocalyptic number.

4861851 is a deficient number, since it is larger than the sum of its proper divisors (1620621).

4861851 is a wasteful number, since it uses less digits than its factorization.

4861851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620620.

The product of its digits is 7680, while the sum is 33.

The square root of 4861851 is about 2204.9605438647. The cubic root of 4861851 is about 169.4079868850.

The spelling of 4861851 in words is "four million, eight hundred sixty-one thousand, eight hundred fifty-one".