4891149811 has 2 divisors, whose sum is σ = 4891149812. Its totient is φ = 4891149810.

The previous prime is 4891149721. The next prime is 4891149821. The reversal of 4891149811 is 1189411984.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4891149811 - 2⁹ = 4891149299 is a prime.

It is not a weakly prime, because it can be changed into another prime (4891149821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2445574905 + 2445574906.

It is an arithmetic number, because the mean of its divisors is an integer number (2445574906).

Almost surely, 2^4891149811 is an apocalyptic number.

4891149811 is a deficient number, since it is larger than the sum of its proper divisors (1).

4891149811 is an equidigital number, since it uses as much as digits as its factorization.

4891149811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 46.

The square root of 4891149811 is about 69936.7557940744. The cubic root of 4891149811 is about 1697.4760482564.

The spelling of 4891149811 in words is "four billion, eight hundred ninety-one million, one hundred forty-nine thousand, eight hundred eleven".