3651421547 has 2 divisors, whose sum is σ = 3651421548. Its totient is φ = 3651421546.

The previous prime is 3651421531. The next prime is 3651421567. The reversal of 3651421547 is 7451241563.

3651421547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (7451241563) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3651421547 - 2⁴ = 3651421531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3651421547.

It is not a weakly prime, because it can be changed into another prime (3651421567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1825710773 + 1825710774.

It is an arithmetic number, because the mean of its divisors is an integer number (1825710774).

Almost surely, 2^3651421547 is an apocalyptic number.

3651421547 is a deficient number, since it is larger than the sum of its proper divisors (1).

3651421547 is an equidigital number, since it uses as much as digits as its factorization.

3651421547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 38.

The square root of 3651421547 is about 60426.9935293822. The cubic root of 3651421547 is about 1539.8815823659.

The spelling of 3651421547 in words is "three billion, six hundred fifty-one million, four hundred twenty-one thousand, five hundred forty-seven".