3638021830620 has 48 divisors (see below), whose sum is σ = 10247457927168. Its totient is φ = 964329935680.

The previous prime is 3638021830607. The next prime is 3638021830621. The reversal of 3638021830620 is 260381208363.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3638021830621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181527996 + ... + 181548035.

It is an arithmetic number, because the mean of its divisors is an integer number (213488706816).

Almost surely, 2^{3638021830620} is an apocalyptic number.

3638021830620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3638021830620 is an abundant number, since it is smaller than the sum of its proper divisors (6609436096548).

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

3638021830620 is a wasteful number, since it uses less digits than its factorization.

3638021830620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363076210 (or 363076208 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 3638021830620 in words is "three trillion, six hundred thirty-eight billion, twenty-one million, eight hundred thirty thousand, six hundred twenty".