3638381452 has 6 divisors (see below), whose sum is σ = 6367167548. Its totient is φ = 1819190724.

The previous prime is 3638381407. The next prime is 3638381491. The reversal of 3638381452 is 2541838363.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 3638381399 and 3638381408.

It is an unprimeable number.

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, 454797678 + ... + 454797685.

Almost surely, 2^3638381452 is an apocalyptic number.

It is an amenable number.

3638381452 is a deficient number, since it is larger than the sum of its proper divisors (2728786096).

3638381452 is a wasteful number, since it uses less digits than its factorization.

3638381452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909595367 (or 909595365 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 3638381452 is about 60318.9974386180. The cubic root of 3638381452 is about 1538.0463014003.

The spelling of 3638381452 in words is "three billion, six hundred thirty-eight million, three hundred eighty-one thousand, four hundred fifty-two".