3648661831 has 2 divisors, whose sum is σ = 3648661832. Its totient is φ = 3648661830.

The previous prime is 3648661829. The next prime is 3648661909. The reversal of 3648661831 is 1381668463.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3648661831 - 2¹ = 3648661829 is a prime.

It is a super-2 number, since 2×3648661831² = 26625466313992545122, which contains 22 as substring.

Together with 3648661829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3648661811) 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 as a sum of consecutive naturals, namely, 1824330915 + 1824330916.

It is an arithmetic number, because the mean of its divisors is an integer number (1824330916).

Almost surely, 2^3648661831 is an apocalyptic number.

3648661831 is a deficient number, since it is larger than the sum of its proper divisors (1).

3648661831 is an equidigital number, since it uses as much as digits as its factorization.

3648661831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 46.

The square root of 3648661831 is about 60404.1540872811. The cubic root of 3648661831 is about 1539.4935410830.

The spelling of 3648661831 in words is "three billion, six hundred forty-eight million, six hundred sixty-one thousand, eight hundred thirty-one".