6634472549 has 2 divisors, whose sum is σ = 6634472550. Its totient is φ = 6634472548.

The previous prime is 6634472527. The next prime is 6634472557. The reversal of 6634472549 is 9452744366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5573667649 + 1060804900 = 74657^2 + 32570^2 .

It is a cyclic number.

It is not a de Polignac number, because 6634472549 - 2¹² = 6634468453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6634472497 and 6634472506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6634472569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3317236274 + 3317236275.

It is an arithmetic number, because the mean of its divisors is an integer number (3317236275).

Almost surely, 2^6634472549 is an apocalyptic number.

It is an amenable number.

6634472549 is a deficient number, since it is larger than the sum of its proper divisors (1).

6634472549 is an equidigital number, since it uses as much as digits as its factorization.

6634472549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 50.

The square root of 6634472549 is about 81452.2716012267. The cubic root of 6634472549 is about 1879.0375854353.

The spelling of 6634472549 in words is "six billion, six hundred thirty-four million, four hundred seventy-two thousand, five hundred forty-nine".