3653642947 has 2 divisors, whose sum is σ = 3653642948. Its totient is φ = 3653642946.

The previous prime is 3653642933. The next prime is 3653642977. The reversal of 3653642947 is 7492463563.

3653642947 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3653642947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3653642947.

It is not a weakly prime, because it can be changed into another prime (3653642977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1826821473 + 1826821474.

It is an arithmetic number, because the mean of its divisors is an integer number (1826821474).

Almost surely, 2^3653642947 is an apocalyptic number.

3653642947 is a deficient number, since it is larger than the sum of its proper divisors (1).

3653642947 is an equidigital number, since it uses as much as digits as its factorization.

3653642947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 49.

The square root of 3653642947 is about 60445.3715928689. The cubic root of 3653642947 is about 1540.1937894939.

The spelling of 3653642947 in words is "three billion, six hundred fifty-three million, six hundred forty-two thousand, nine hundred forty-seven".