3631421671 has 4 divisors (see below), whose sum is σ = 3633455592. Its totient is φ = 3629387752.

The previous prime is 3631421669. The next prime is 3631421707. The reversal of 3631421671 is 1761241363.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1761241363 = 7 ⋅251605909.

It is a cyclic number.

It is not a de Polignac number, because 3631421671 - 2¹ = 3631421669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3631421371) 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, 1014280 + ... + 1017853.

It is an arithmetic number, because the mean of its divisors is an integer number (908363898).

Almost surely, 2^3631421671 is an apocalyptic number.

3631421671 is a deficient number, since it is larger than the sum of its proper divisors (2033921).

3631421671 is a wasteful number, since it uses less digits than its factorization.

3631421671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033920.

The product of its digits is 18144, while the sum is 34.

The square root of 3631421671 is about 60261.2783717704. The cubic root of 3631421671 is about 1537.0649769408.

The spelling of 3631421671 in words is "three billion, six hundred thirty-one million, four hundred twenty-one thousand, six hundred seventy-one".