4921811 has 2 divisors, whose sum is σ = 4921812. Its totient is φ = 4921810.

The previous prime is 4921783. The next prime is 4921841. The reversal of 4921811 is 1181294.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4921811 - 2¹⁰ = 4920787 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (4921841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2460905 + 2460906.

It is an arithmetic number, because the mean of its divisors is an integer number (2460906).

Almost surely, 2^4921811 is an apocalyptic number.

4921811 is a deficient number, since it is larger than the sum of its proper divisors (1).

4921811 is an equidigital number, since it uses as much as digits as its factorization.

4921811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 26.

The square root of 4921811 is about 2218.5154946495. The cubic root of 4921811 is about 170.1015656057.

The spelling of 4921811 in words is "four million, nine hundred twenty-one thousand, eight hundred eleven".