3630121811 has 4 divisors (see below), whose sum is σ = 3676072800. Its totient is φ = 3584170824.

The previous prime is 3630121801. The next prime is 3630121819. The reversal of 3630121811 is 1181210363.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3630121811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3630121819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22975376 + ... + 22975533.

It is an arithmetic number, because the mean of its divisors is an integer number (919018200).

Almost surely, 2^3630121811 is an apocalyptic number.

3630121811 is a deficient number, since it is larger than the sum of its proper divisors (45950989).

3630121811 is an equidigital number, since it uses as much as digits as its factorization.

3630121811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45950988.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 3630121811 is about 60250.4922054584. The cubic root of 3630121811 is about 1536.8815586271.

The spelling of 3630121811 in words is "three billion, six hundred thirty million, one hundred twenty-one thousand, eight hundred eleven".