3638454648 has 32 divisors (see below), whose sum is σ = 9631204560. Its totient is φ = 1141475840.

The previous prime is 3638454619. The next prime is 3638454689. The reversal of 3638454648 is 8464548363.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 3638454648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4458483 + ... + 4459298.

Almost surely, 2^3638454648 is an apocalyptic number.

It is an amenable number.

3638454648 is an abundant number, since it is smaller than the sum of its proper divisors (5992749912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3638454648 is a wasteful number, since it uses less digits than its factorization.

3638454648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8917807 (or 8917803 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 51.

The square root of 3638454648 is about 60319.6041764201. The cubic root of 3638454648 is about 1538.0566153346.

The spelling of 3638454648 in words is "three billion, six hundred thirty-eight million, four hundred fifty-four thousand, six hundred forty-eight".