3549657497 has 2 divisors, whose sum is σ = 3549657498. Its totient is φ = 3549657496.

The previous prime is 3549657491. The next prime is 3549657509. The reversal of 3549657497 is 7947569453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3549657241 + 256 = 59579^2 + 16^2 .

It is a cyclic number.

It is not a de Polignac number, because 3549657497 - 2⁴ = 3549657481 is a prime.

It is not a weakly prime, because it can be changed into another prime (3549657491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1774828748 + 1774828749.

It is an arithmetic number, because the mean of its divisors is an integer number (1774828749).

Almost surely, 2^3549657497 is an apocalyptic number.

It is an amenable number.

3549657497 is a deficient number, since it is larger than the sum of its proper divisors (1).

3549657497 is an equidigital number, since it uses as much as digits as its factorization.

3549657497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28576800, while the sum is 59.

The square root of 3549657497 is about 59579.0021484080. The cubic root of 3549657497 is about 1525.4412406976.

The spelling of 3549657497 in words is "three billion, five hundred forty-nine million, six hundred fifty-seven thousand, four hundred ninety-seven".