3630743645 has 4 divisors (see below), whose sum is σ = 4356892380. Its totient is φ = 2904594912.

The previous prime is 3630743621. The next prime is 3630743651. The reversal of 3630743645 is 5463470363.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 571879396 + 3058864249 = 23914^2 + 55307^2 .

It is a cyclic number.

It is not a de Polignac number, because 3630743645 - 2¹² = 3630739549 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363074360 + ... + 363074369.

It is an arithmetic number, because the mean of its divisors is an integer number (1089223095).

Almost surely, 2^3630743645 is an apocalyptic number.

It is an amenable number.

3630743645 is a deficient number, since it is larger than the sum of its proper divisors (726148735).

3630743645 is an equidigital number, since it uses as much as digits as its factorization.

3630743645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726148734.

The product of its (nonzero) digits is 544320, while the sum is 41.

The square root of 3630743645 is about 60255.6523904604. The cubic root of 3630743645 is about 1536.9693087259.

The spelling of 3630743645 in words is "three billion, six hundred thirty million, seven hundred forty-three thousand, six hundred forty-five".