3643145847 has 24 divisors (see below), whose sum is σ = 5805231120. Its totient is φ = 2183153280.

The previous prime is 3643145843. The next prime is 3643145879. The reversal of 3643145847 is 7485413463.

3643145847 is a `hidden beast` number, since 3 + 64 + 3 + 1 + 4 + 584 + 7 = 666.

It is not a de Polignac number, because 3643145847 - 2² = 3643145843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643145843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197928 + ... + 215549.

It is an arithmetic number, because the mean of its divisors is an integer number (241884630).

Almost surely, 2^3643145847 is an apocalyptic number.

3643145847 is a deficient number, since it is larger than the sum of its proper divisors (2162085273).

3643145847 is a wasteful number, since it uses less digits than its factorization.

3643145847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413583 (or 413580 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 3643145847 is about 60358.4778386599. The cubic root of 3643145847 is about 1538.7173565533.

The spelling of 3643145847 in words is "three billion, six hundred forty-three million, one hundred forty-five thousand, eight hundred forty-seven".