3636857645 has 16 divisors (see below), whose sum is σ = 4546463040. Its totient is φ = 2790403200.

The previous prime is 3636857633. The next prime is 3636857647. The reversal of 3636857645 is 5467586363.

It is a de Polignac number, because none of the positive numbers 2^k-3636857645 is a prime.

It is a super-3 number, since 3×3636857645³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3636857647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138251 + ... + 162440.

It is an arithmetic number, because the mean of its divisors is an integer number (284153940).

Almost surely, 2^3636857645 is an apocalyptic number.

It is an amenable number.

3636857645 is a deficient number, since it is larger than the sum of its proper divisors (909605395).

3636857645 is a wasteful number, since it uses less digits than its factorization.

3636857645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300796.

The product of its digits is 10886400, while the sum is 53.

The square root of 3636857645 is about 60306.3648796709. The cubic root of 3636857645 is about 1537.8315527071.

The spelling of 3636857645 in words is "three billion, six hundred thirty-six million, eight hundred fifty-seven thousand, six hundred forty-five".