3643145656 has 8 divisors (see below), whose sum is σ = 6830898120. Its totient is φ = 1821572824.

The previous prime is 3643145603. The next prime is 3643145663. The reversal of 3643145656 is 6565413463.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227696596 + ... + 227696611.

It is an arithmetic number, because the mean of its divisors is an integer number (853862265).

Almost surely, 2^3643145656 is an apocalyptic number.

It is an amenable number.

3643145656 is a deficient number, since it is larger than the sum of its proper divisors (3187752464).

3643145656 is a wasteful number, since it uses less digits than its factorization.

3643145656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455393213 (or 455393209 counting only the distinct ones).

The product of its digits is 777600, while the sum is 43.

The square root of 3643145656 is about 60358.4762564464. The cubic root of 3643145656 is about 1538.7173296631.

The spelling of 3643145656 in words is "three billion, six hundred forty-three million, one hundred forty-five thousand, six hundred fifty-six".