4126506649 has 2 divisors, whose sum is σ = 4126506650. Its totient is φ = 4126506648.

The previous prime is 4126506647. The next prime is 4126506667. The reversal of 4126506649 is 9466056214.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3255843600 + 870663049 = 57060^2 + 29507^2 .

It is a cyclic number.

It is not a de Polignac number, because 4126506649 - 2¹ = 4126506647 is a prime.

Together with 4126506647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4126506647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2063253324 + 2063253325.

It is an arithmetic number, because the mean of its divisors is an integer number (2063253325).

Almost surely, 2^4126506649 is an apocalyptic number.

It is an amenable number.

4126506649 is a deficient number, since it is larger than the sum of its proper divisors (1).

4126506649 is an equidigital number, since it uses as much as digits as its factorization.

4126506649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 4126506649 is about 64237.8910690567. The cubic root of 4126506649 is about 1603.9623989430.

The spelling of 4126506649 in words is "four billion, one hundred twenty-six million, five hundred six thousand, six hundred forty-nine".