4281215749 has 2 divisors, whose sum is σ = 4281215750. Its totient is φ = 4281215748.

The previous prime is 4281215713. The next prime is 4281215767. The reversal of 4281215749 is 9475121824.

4281215749 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4079376900 + 201838849 = 63870^2 + 14207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4281215749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4281215249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2140607874 + 2140607875.

It is an arithmetic number, because the mean of its divisors is an integer number (2140607875).

Almost surely, 2^4281215749 is an apocalyptic number.

It is an amenable number.

4281215749 is a deficient number, since it is larger than the sum of its proper divisors (1).

4281215749 is an equidigital number, since it uses as much as digits as its factorization.

4281215749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The square root of 4281215749 is about 65430.9999083003. Note that the first 4 decimals coincide. The cubic root of 4281215749 is about 1623.7619918466.

The spelling of 4281215749 in words is "four billion, two hundred eighty-one million, two hundred fifteen thousand, seven hundred forty-nine".