4261966549 has 2 divisors, whose sum is σ = 4261966550. Its totient is φ = 4261966548.

The previous prime is 4261966517. The next prime is 4261966561. The reversal of 4261966549 is 9456691624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2423100625 + 1838865924 = 49225^2 + 42882^2 .

It is a cyclic number.

It is not a de Polignac number, because 4261966549 - 2⁵ = 4261966517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4261966496 and 4261966505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4261996549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2130983274 + 2130983275.

It is an arithmetic number, because the mean of its divisors is an integer number (2130983275).

Almost surely, 2^4261966549 is an apocalyptic number.

It is an amenable number.

4261966549 is a deficient number, since it is larger than the sum of its proper divisors (1).

4261966549 is an equidigital number, since it uses as much as digits as its factorization.

4261966549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 52.

The square root of 4261966549 is about 65283.7387792703. The cubic root of 4261966549 is about 1621.3247494747.

The spelling of 4261966549 in words is "four billion, two hundred sixty-one million, nine hundred sixty-six thousand, five hundred forty-nine".