3645718243 has 8 divisors (see below), whose sum is σ = 3663651600. Its totient is φ = 3627802848.

The previous prime is 3645718199. The next prime is 3645718249. The reversal of 3645718243 is 3428175463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3645718243 - 2¹³ = 3645710051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3645718243.

It is not an unprimeable number, because it can be changed into a prime (3645718249) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 587505 + ... + 593677.

It is an arithmetic number, because the mean of its divisors is an integer number (457956450).

Almost surely, 2^3645718243 is an apocalyptic number.

3645718243 is a deficient number, since it is larger than the sum of its proper divisors (17933357).

3645718243 is a wasteful number, since it uses less digits than its factorization.

3645718243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8981.

The product of its digits is 483840, while the sum is 43.

The square root of 3645718243 is about 60379.7833964316. The cubic root of 3645718243 is about 1539.0794300002.

The spelling of 3645718243 in words is "three billion, six hundred forty-five million, seven hundred eighteen thousand, two hundred forty-three".