4924249861 has 2 divisors, whose sum is σ = 4924249862. Its totient is φ = 4924249860.

The previous prime is 4924249823. The next prime is 4924249871. The reversal of 4924249861 is 1689424294.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3493519236 + 1430730625 = 59106^2 + 37825^2 .

It is a cyclic number.

It is not a de Polignac number, because 4924249861 - 2⁹ = 4924249349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4924249871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2462124930 + 2462124931.

It is an arithmetic number, because the mean of its divisors is an integer number (2462124931).

Almost surely, 2^4924249861 is an apocalyptic number.

It is an amenable number.

4924249861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4924249861 is an equidigital number, since it uses as much as digits as its factorization.

4924249861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 49.

The square root of 4924249861 is about 70172.9995154832. Note that the first 3 decimals coincide. The cubic root of 4924249861 is about 1701.2965726882.

The spelling of 4924249861 in words is "four billion, nine hundred twenty-four million, two hundred forty-nine thousand, eight hundred sixty-one".